In college we were required to typeset assignments in LaTeX for all the math classes past multivariable calculus. I started out with Overleaf, but switched to local compilation about a year in. It's much nicer to be able to write in my usual text editor and compile documents instantly. On Arch, all I had to do was install texlive-most. It includes every package I have ever needed to use. To compile a document, I just run 'pdflatex *.tex'. Sometimes bibtex too. If you're having trouble with setup and configuration, I recommend texlive.
