I actually managed to successfully get a refund on ACC on PlayStation, after experiencing crashes on PS5. The game would routinely crash after races, particularly the early practices at Monza in career mode.
I had to follow some technical steps, provide screenshots of the error and even a video of it happening, but they approved the refund.
The very next day I realised I badly missed the thrill of just playing this game even if it’s just to do single races, so I re-bought it! But, if you’re really unhappy with the bugs, a refund is possible.