I've been back and forth on that topic, going to paper and back to a todo manager of some sort.
For the past few years I've been using obsidian for all my note taking, and none of the extensions I tried did what I wanted, so I built myself one[^1]. The initial goal was to take todos right within my notes, so I could keep the context of what the todo was about. Then I started adding stuff like planification and tagging. So it's entirely text based, but with a planner UI on top of it that makes it easy to drag and drop stuff to when I want to do them, and plan my day accordingly.
I think the more you go, the more you get set in your own ways, the harder it is to tag along on someone else's implementation of a system.
Low tech like paper and text files are good because they're maleable, and dont embed stuff you don't actually need.