How do you create your own tactics?

I’ve been using the study feature lately, in the hope of learning from my own games. I’ve saved certain positions, but ideally I’d love to have a “puzzle” approach with “find the best move for white/black” and then a green tick for correct, or red X if wrong. How do I do this, please?

LiChess has an interactive lesson feature. it's explained here: https://lichess.org/blog/WtDErSQAADJfhJJs/interactive-lessons

Here's an example of how it works/looks with some simple mating puzzles where you have to verify you can handle all the moves the opponent can make.