Screen unresponsiveness and unable to zoom

Hello everyone.

Recently my phone screen (s23U) got cracked. Went to a non samsung repairshop to fix it. At first it was fine but i think it was after the latest update my issues began.

The letter S on the regular keyboard is unresponsive at times, and to zoom in on pictures with 2 fingers also most of the times does not work. I saw somewhere a possible solution to update all apps then delete google cashe and that worked at first. But after awhile it just goes back to not working. Tapping it with the Spen works fine. I don't understand that sometimes it works and then randomely not. Ive factory reset, etc but no solution that lasts. And yes i know it's a non eom screen on there but if that caused the problem the issues would be consistent.