Chosen Solution

Front camera is working but blurry for far subjects and only clear when super close. Not focusing even after clicking. Face ID still working 100% though Troubleshooting I did so far. Forced restart, Factory Reset (not from Dfu mode) Cleaning with Microfiber Cloth. Still Blurry.

Planning on Disassembly (I have tools and experience on old iphones) though I still have warranty till May 2021? Should I have it checked instead? Or it is not worth it? Iphone 11 Pro Max 64GB, Software ver: 14.4, Model num: MWHH2PP/A

If under warranty the best to do is let Apple solve it for you.