Lot of great recommendations so far, but I will mention some of my favourites in case they were missed in the other comments: hyprland
for a Wayland compositor / window manager, so you can easily set up keybinds for whatever you want, rofi
for launching programs (and much more, I even made rofi-games
so I can launch all my games from one place), and yazi
for the file manager (use a lot of TUIs in general though).
You CAN go more extreme with the no mouse journey by using something like qutebrowser
as your browser but I just use Firefox/librewolf with vimium c
and find that's good enough for me.