It's definitely not just you. There's no such thing as LaTeX. There are 2^1000 different things called LaTeX, all subtly incompatible with each other. I suppose LaTeX can be made to work as an authoring tool where you're the only author and you're producing PDF from it. But for sharing documentation it's hopeless. I've never been able to compile somebody else's LaTeX source. There's always some weird library dependency I don't have. Whenever I find a github repo whose documentation is only available as LaTeX source, I abandon it and look for another repo that'll get the job done.