I also find myself using https://man.archlinux.org/ a lot. It's much more readable/user-friendly than https://man7.org plus it contains man-pages from their `extra` repo which contains a lot of popular oss tooling.
That's great! I didn't know that Arch had online manpages too. I frequently use https://manpages.debian.org/ for similar reasons.
unfortunately there's a trend lately where many newer cli tools don't have a man page. they put up a --help and think it suffices
even though there are tools to automatically generate man pages those days