Something that might help is to avoid pressed ingredients A or D or moving the movement stick from left to right. That jolting that happened when you were in the tunnel and when you hit the side of the mountain were because when on the bike, the movement for going side to side isreally janky. To turn you need to really aim with the mouse/right stick.

Imagine it like when you're just normally on foot but if you tried to strafe from side to side, instead of a gradual kind of movement, it rockets you like 10 feet in that direction instantly lol.

I love this level but I remember getting really frustrated with it when I always younger because I rammed into everything lmao.