xiaomi redmi note 8 pro

My phone is redmi note 8 pro. My office building has a t-mobile transmitter inside which cause my phone to automaticly select network as T-mobile, despite having the option "Automatically select network" disabled. I have a sim card from virgin mobile and as a result I cannot use mobile internet...

For some reason , i can't use my camera's anymore on other apps although I gave them permission. It happened ever since i got the update two days ago and honestly I'm not sure what to do. The only app that the camera is working on is the Default camera app. Please, I need some help.

Although apps like instagram , snapchat and more got permission from me , the camera doesn't seem to work anymore beside the camera's default app. I already gave the apps permission but it keeps on asking for one.

My phone got stuck in the recovery mode , but i do not want to wipe data because i do not have a backup , there is any way to backup my data first ?