Apple iPhone 14 Pro Freezing, Shutdown, Camera Not Working Properly

I bought the iPhone 14 Pro on May 25th. It hasn't even been 3 months yet. My phone turns itself off and on while editing in Instagram Reels. Sometimes it won't turn on for a few minutes. It freezes constantly. Same thing happened on camera. As someone who pays attention to using my phone a lot during the day and taking good care of it, I don't think it's possible to have such freezes and shutdowns in a short period of 3 months. Before that I was using iPhone 7. Even though the phone is so old and how many years old, I did not have such problems. I want my problem solved.