Now I’ve had a play:
The look, your game looks like it’s attempting realism but to go with the tongue in cheek over the top gnarspeak of the description you should go for cartoony.
Also check out Trials Frontiers’ lean controls and see what you think, tap to shift stance forward or back, then hold to really lean on it. Your rotation speed seems sluggish too.
Right thumb should cover faster and slower – where are the brakes, by the way? Or is that how you emphasise “flow”
As for pump or bunnyhop, if you must have one I’d just have tap and go and no charging up – or allow pumping without a specific button and just weight transfer.
Maybe pedalling should be a limited amount of sprinting per level. That combined with no brakes could differentiate it from the top trials games.
Also, it appears to feature an orange 5.