As everybody suggests, you should either try Mint again or go ZorinOS. If you have problems there are dedicated communities for asking general Linux questions so feel free to ask.
Also, LLMs are very handy for trivial questions like binding PDFs together (which can be done using pdfunite FYI). Just don't blindly execute what it says, let it explain the meaning of each part of the command.
mindustry is good
Also I'm playing Morrowind on OpenMW these days
Edit: And STK!