I'm on Ubuntu 20.04 with GNOME. Used to hate Gnome Shell, Unity was much better suited to my workflow (and wasted less screen real estate). But Canonical has actually made it usable over the last few years, so I'm generally quite happy with it. But it doesn't quite have the flexibility of a real twm.
Also maybe check out Gnome Shell? Haven't tried it personally but tile-y and similar look and feel to modern GNOME/Unity, if that's what you're after.