Widgets are blank and not too sure how to use the solution.

Hey all, I discovered my widgets were black or white depending on whether I was in light or dark mode. Only a select few work, being Clock and Batteries. I went to the Apple Store to see if I could get this fixed, and they told me to make a new user account and transfer my data over there using an external hard drive. I have tried everything to fix the widgets, force quitting it through Activity monitor, restarting my Mac, and reinstalling the OS.

However, my question is I am not too sure what data I can transfer. I have few games I want on my new account, and I have a lot of saved data on them. Would it be possible if I transfer them over but will it clash with the new user file? Any help is appreciated.