I’ve been trying and have yet to succeed. Never have I learned as much about anything as I did when I was taking paper notes and had a backpack full of binders.

If youre up for learning emacs, org roam kinda works like zettelkasten. Its backed by some sort of sql i think. Theres also probably other zettelkasten packages for emacs, but org mode is very powerful and is one of the best notetaking tools ive used.