I think I might be able to fix the selfie camera using stock snap camera app in the next build by following these 2 commits I made for the SM-T350 dated May 7, 2022This is what I've discovered so far:
8. Camera and selfie camera (selfie camera won't take pictures with the snap app but will with Simple Camera).
9. Video recording (no audio)
What doesn't work
Microphone
https://github.com/retiredtab/device_samsung_gt58wifi/commits/lineage-18.1
The microphone works on my T357W. I used the LineageOS built in recorder app and I can record and hear my own voice.