I honestly just buy those cheap generic clear cases on amazon that cost $12 and come with a screen protector. I bought one for my 12 PM and my wife's 14 PM and they've been fine so far. The buttons fit perfectly in the case and wireless charging works fine too.
After spending so much on a new iPhone, I went ahead and splurged on a Live-edge case from carved back in September 2021. The case is beautiful, thin, and has aged delightfully. Customer service is excellent as well. Not cheap but totally worth it.