After updating iOS 15 from beta 5 to beta 6, COD Mobile crashes while loading - it crashes immediately. I will be grateful for any advice. From the comments above, however, it is clear to me that a patch may appear as part of the COD Mobile developer update.

I agree with @Doron722. The only thing that would help if the developers of COD mobile released an update that would solve the crash of the game. However, with the constant release of beta versions of iOS, I don't think there will be any COD mobile update for this type of problem, so there is nothing left but to wait for the sharp version of iOS15.