After installing and using terminal commands, my Mac does the following:

• Not show time/date on menu bar (as well as other system preferences menu bar items such as Airplay, sound, battery, etc.)
• Any time I do a control-click, tap w/ two fingers, or any command the application I am in quits and/or Finder relaunches completely (I cannot copy and paste, undo, or delete any files unless using Terminal)
• Terminal does not recognize any commands, so on each use I have to use a $PATH command

I have deleted all of the sidecar files (that I could find) and it still doesn't work.
I am very angry that this happened to my computer, and would like to fix it ASAP without having to reset and lose files (I also want to keep Catalina)

I have no recent backups of my machine (my bad)