Hi, that is not a bad lap time, but I understand your worry as we see today that the average player manages at least 1:34.0x-1:33.9x.
I watched the replay and it looks to me that you're not fully using the track width. If you look at top replays (1:32.xx), you'd notice that not a single centimeter is left out.
It also appears to me that you're not going very fast in the corners, even if you took the right brake points as other fast people, but because you lose some momentum in some corners, the result is that the optimal brake point is a bit farther than that of other fast guys, because you came out of the last turn a bit slower, except for the long straight corner, which is irrelevant because the car will reach the same top speed at +/- 1 kmph because the car would have run out of acceleration.
So have your setup checked. I think you're losing (not having a good) speed because you're not using the full width, because you're sliding, because you're off the ideal line sometimes, because you're not accelerating early enough, and because you're in hot lap mode and you didn't set your tire temperatures for 6 laps. If you want to do a hot lap, you must set your tire temperatures to be optimal (at 50°C) when you reach the half of the course and put the fuel to 2%. If you want to do 6 laps and hope that you get a good lap, then, it's better to do in Single Player mode or set tire temperatures to cold (at 30°C).
Download, fast replays and watch them, then watch your best lap, and see how different they are, where you're not as fast, and think how you can be as fast, of course, this won't get you to break the WR, but hopefully can be enough to help you reach your goal easier.
Also, I believe that you should try to modify your current setup. Make a copy of the original and try to play with the toe settings, this can help you reduce your sudden sliding that you didn't expect. Playing with other settings without knowing what they do can make the set worse. But MAYBE, try to reduce front anti-roll bars (40 N/mm) to the point the car feels a bit like a boat, maybe it will be more predictable, but less faster than top setups. Just try this once, a setup like this will only determine if your problem is feeling the car correctly. If you've felt the car correctly, I think that at the numerous occasions that your car drifted, you should have counter steered early, which makes me think that you didn't expect the drift to happen because you haven't felt that the car would drift. This setup is supposed to be forgivable, and maybe because it's forgivable, you can see that you may be doing somethings that are be useless or even wrong but since the set is forgivable, the consequences are less serious, if you don't see that, then delete the set, because I just thought this up and I haven't really tested it, but the point is to make the car behave almost like a street car (with a lot of body roll) which tends to be more forgivable, but more slow and they don't need a World Champion to be driven to the limit without breaking it. So I suppose that, maybe because a set is a bit more forgiving, it can help you spot mistakes or wrong patterns in your driving with more ease.
If that doesn't help, because I'm not sure it's any useful or helpful to do that, you can try asking people for a setup and try them until you find one you like and you are fast with.
Also, practice is the best way to improve, no one is born blessed with god-like driving. I was a noob as well and now I got where most people are still behind. My PB in XFG is 1:33.16, I feel like I can improve it if I try hard enough. In XRG, it's at 1:32.68, I also feel like I can improve it because my theoretical bests are much faster by at least 0.1s. But I know that you're not looking for tenths but seconds, and for that, you must practice more. Before I did 1:33 and 1:32, I was doing 1:38 and 1:36... I slowly improved to become this fast and that didn't happen in a day or a week.
I'm gonna tell you a method that I use to improve fast on a given track : Watch the WR replay, Memorize the line in the head, Note the brake and acceleration points as well as shift points and gears through corners, then reproduce it. Still not faster? Watch WR. Watch yours. Note the major differences and think how you can fix them. Try again. Still not faster? Watch WR. Watch yours. Note the differences and fix them. Try again... etc. It's not your join date that will determine your overall speed but mostly your lap count and experience. Being younger can help learn faster, but I have seen old people do very fast laps (Rentner).
So, I summarize what you may need to improve to be faster:
-Your racing line is not optimal. (Be close the edge when you brake and very close to the apex when you accelerate)
-Be smoother and feel the car to be able to predict how it will drive with at least 80% precision. (Enable force feedback and if you suddenly don't feel the force feedback when you're going in a corner, it can mean you're sliding)
-Brake when it's time and brake full power almost everywhere. (As a mouse user, I can't choose how much brake force I can apply but I'm still fast and I barely lock the tires except in T1 where the front is becomes suddenly lighter because of the hill. I use heel and toe to minimize tire lock effect in T1, some people reduce brake force at the cost of other braking zones. For wheel, I hear people have 560 - 650 nm, I don't like weak brakes because other sectors are slower, but you can fully press the brakes without a problem as long as you do it at the right moment. With 650nm, there is no chance for me to go through T1 without locking. Fast people with 650 nm when they brake have their throttle almost fully open, even with this force they manage good times even in sector 1. It's counter intuitive, so try around 560-600 nm.)
-Accelerate when it's time. (Most of the time it's just 1-5 meters away before the apex. Since you have pedals, you can accelerate quite earlier than mouse, I would have to tap the accelerator, but you must press it progressively and smoothly and when you reach the apex you should be at 100% throttle.)
-And most importantly, give yourself enough time. (Most people who do a fresh start have to go through many laps to reach that level. At 2000 laps, it's still not enough. If you look to be 1 second faster than 1:34.64, then around another 1000 laps can do it, in my opinion, you should be able to do it in less than 500, but everyone is different.)
Sorry for long post. I hope this helps. And if this is confusing instead of helping, zap it out of your memory.