Oppo phones are quite alright I would say, they're doing good, they surely have some phones that stand out. But the user experience isn't for everyone I'd say. The phones run on ColorOS and I myself am surely not a fan.
I'd suggest the Pixel 6 pro against the S22 Ultra, but the 6 pro is a bit buggy. Even though it surely would've costed wayy less.
Good luck with your iPhone
I know I'll need it, most people say that Apple devices are easy to use, to me it's the opposite hahaha.