At about 20 seconds into the race in the 1st turn you turn right, then decide to stop turning right and accelerate so you hit DaddyCool. If you had continued steering right or lifting off the throttle you wouldn't have crashed into him.
About [SR]Monty, he drove a little wierd, tried to overtake in the chicane on his 2nd lap instead of waiting to overtake you on the straight. Anyway, on his 3rd lap (your last) he tried just that and succeded.
Now instead of letting him pass, you steer right into him that causes him to spin. Your fault? Yes. Can't get any cleaner pass than that. He drove 100% straight also, which you didn't.
Here is two pictures showing that: (the green lines are the original lines in the tarmac, just painted green)
So regarding "Can you check and confirm my move was right?", it wasn't.
About [SR]Monty trying to overtake you and interfering with your race is a different question (not talking about the last pass he did.)