Man, you've got some basic errors there that can be corrected easily.
first, the way you drive that first chicane is totally wrong. You need to drive it aggressively. Drive the first part so that only the left side of the car hits the track. Then the middle one a bit more carefully and the last one as aggressive as you can. Just straight over the corner as long as you don't hit the tire wall.
During the second stint you need to switch one gear lower while braking to the chicane. then after or during it depending on your transmission you change to 4th gear.
In the last stint you need to switch to 5th gear before the first corner and at the last one you need to release throttle before the corner and drive the corner with full throttle. That's the biggest errors what I noticed.
Also try to use more of the road, you need it all to get good speeds in corners and after them.