There's a bunch of things like i3wm. But I have to give a big warning. These are very addictive and you'll go down rabbit holes making your system beautiful and easy to use (for you and absolutely no one else) that you may lose lots of productivity (well... work productivity?). So caution, do not visit /r/unixporn and do not search tools like picom and rofi. Sure, the life looks glamorous but it is an addiction worse than MTG or Warhammer, albeit cheaper. Fuck it, who am I kidding, go for it.