Raspberry Pi 7" touchscreen

Hello, first timer here

This is my first experience with dietpi, so please excuse any mistakes I make. I’ve been trying to configure the Raspberry Pi 7" touchscreen. I have installed DietPi on a Raspberry Pi 3. I’ve tried to google for any solutions, but most of them have not changed anything.

I know that cloudshell is an option but I would prefer to not use cloudshell. Is there a known way to setup the LCD screen? Dietpi-config has installations for other LCD screens. I would think though that they are incompatible because they are all different resolutions.

Anyone have any advice or resources I can take a look at that might guide me in the right direction?