Raspberry pi official touchscreen issue

I’m using a raspberry pi model 3 and the official 7” touchscreen. After a crapton of messing with the config file I managed to run raspbian on the pi and get to the home screen. Unfortunately, only a small top left portion of the screen works. Of course I have tried calibrating but no luck because I can’t even reach other corners. Mouse and keyboard work fine. I have seen people have this problem before, but there seems to be no solution. Did anyone have a similar experience? They are powered using the official power adapter and I’m running Debian 10 because 11 wouldn’t work at all.

Still nothing

ok let's just work through everything one step at a time here first uninstall and reinstall the imager, second get a SD card you know works and scroll down to the imager and press "erase" this should reformat the card

also select pi 3 as the device your using

now select raspberry pi os (64 bit full). configure your network settings. set the hostname and password to something you remember and finally go into services and enable ssh

now write to the SD card

unplug the display (if it's plugged in currently) and attempt to clean it with isopropyl alcohol if you have any. then pull the black part of the display connector on the pi and place the display cable in with the blue side down (not sure about this tho so if it doesn't work first time switch it around).

finally update the pi typing sudo apt-get update -y && sudo apt upgrade -y now it should work. if not you may need to reboot sudo reboot now