unable to install “app”

I can’t update or install any apps from app store and I’ve tried literally every possible methods on the internet. I tried turning off the power, disconnecting and reconnecting to wifi, logging out and signing in again, updating the device, like everything. This is what I get when I try to install something:

Is there any other things I can do to try fixing it by myself? The internet connection is not a problem cause my housemates are fine and my other devices are just working okay. Like wtf this is annoying as ****