MotoGP 24 - Got Promoted to MotoGP, Now Unplayable

I got a promotion from Moto3 to MotoGP, took it... and now I might as well have broken the game because I'm finding the Aprilia completely unrideable. Anything less than having all of the neural assists on maximum (at which point the game basically plays itself, which there's no point to) and it just doesn't work. It won't brake, it won't lean properly. Currently having trouble at T1 in Portimao where the bike keeps flipping itself over when I brake, even after running the 'stoppie' option the guided set up 3/4 times.

I barely had an issue at all with the Moto3 bike, and while it obviously makes sense that there'd be some of difference - faster, presumably heavier, and I assume the game is trying to work with the aero on the current MotoGP bikes - it feels like I'm playing a completely different game.

I am still fairly new - played a fair amount of MotoGP 18 because it was cheap on the PS store but moved up to '24 before I got to MotoGP, so neither have previous experience or anything to compare it to (other than I don't remember the MotoGP bike feeling so hard on the intro/tutorial bit in '18)

Is there anything I'm missing in terms of options, either in terms of assists or setup, that might make this game actually playable again?
Also, just to be clear, I am not a competitive player, I don't touch multiplayer and I never will, I do not care about realism, I don't care about learning to be good without assists if it's going to take me years to get there - I just want my game to be fun again.

Any help anyone can give would be hugely appreciated.