The quickest way is to add the Newpipe repo: https://newpipe.net/FAQ/tutorials/install-add-fdroid-repo/
If you already installed Newpipe from the f-droid main repo, you may need to backup your data, uninstall and reinstall it. https://github.com/TeamNewPipe/NewPipe?tab=readme-ov-file#installation-and-updates
I use Magic Earth when I take my car, Organic Maps when I walk or use public transportation. I don’t think there is a single “best app”, it depends on your use case.