Zettlr! Its designed around writing manuscripts in markdown+latex, then exporting to pure LaTeX, PDF, or any other Pandoc-supported format via a builtin Pandoc GUI. The only thing that doesn’t work particularly well is the table editor, but they’re working on it.
It is electron based, but almost all graphical editors for markdown + inline latex are (obsidian, etc.) because MathJax & KaTeX are the most mature method to render LaTeX inside other document formats.
Obsidian is also good, but it’s not FOSS and their built-in export isn’t great.
Yes, on fedora you just click the check box for the Nvidia driver repo in KDE Discover or Gnome Software, and you’re good.