change dpi into 600 Phone went bootloop usb debugging is off forced to wipe out all of my data

I bought the poco x3 nfc. Had actually forgotten about the 120hz feature and I thought it was just a gimmick. Turned it on and I was blown away. There is no way of going back to 60hz.

I just left my cell phone charging for a bit and when i came back I literally can’t use it because Security keeps stopping is popping up every 2 seconds. I didnt download anything from shaddy sites and nothing outside ...

Consider this… I look through my galery and play my video… After that there will popup some random shi¹ty videos at bottom ofthe screen… How can I prevent this ? .. also if I want to get back to my ...