iPhone 12 Pro Max Camera microphone problems

Hi! My mic is giving trouble after a couple of months using my phone normally.

Regular cam vídeos with really low sound, and videos recorded directly in whatsapp with strong “sea waves” background sound and really really low sound. IOS updated, already tried all the troubleshootings (reset network settings, reinstaling apps, etc).

I use my phone for video works so this is a big issue for me.