Post install via arch no visible desktop - mouse, apps and desktop select screen available

Hi :3,

After installing arch for the first time I choose kde plasma in the desktop options. Now after logging in it shows a black screen and my mouse. In the upper left corner a blue blob pops up sometimes. Pressing it shows some desktop selection and a few quick artifacts and red text when opening another desktop. Through this menu I can boot the terminal and other apps yet can’t actually see them.

This sucks because now I can’t confirm any code I enter or see if Linux wants passwords. Sadly I don’t know much coding yet and feel pretty stuck rn so help would be GREATLY appreciated <3