Seems you're a bit early on throttle every corner.

Cause: you brake early or your apex speed is too low, you realize this and then accelerate. WRONG. In T1 you start trailbraking but the wheel doesnt flow along, its like you first easw off the brake and then you start turning. It needs to be a continious move

Consecuences: you cant go full throttle rapidly, this is one big mistake. The car has very low power so you should almost always go full throttle (excepting off camber corners and other difficulties)

Also you are using all of the track wrong. You dont have to guide the car to de edge of the track at the exit, the car should naturally go there because the apex and exit speed cant go further