If an incorrect or sub-standard move is played instead of the 'winning move', how about adding an option, which allows us to see why the played move is not good, or doesn't work.
I don't mean show the solution, I mean to show what I might've missed
You're supposed to figure it out yourself. If you can't, turn the engine on and see.
The engine shows exactly that. You can see what you should have played, or the result of any other move you could have made including your incorrect one.
Yes, I get that I can turn the engine on after completing the puzzle, But Adding a trainer mode, which would show why a move is bad, would be helpful.
Just my opinion, wanted to know about other beginners
What you are asking for is A LOT of work and Lichess is a free website. Those puzzles are probably generated automatically. Even adding explanations for few moves in is a lot of work. But maybe there could be an upvoting like system. Solvers somehow add their understanding of their solution and the ones with the highest upvotes could be suggested after a person solves the puzzle correct or wrong.
The puzzles categorically are taken from games. If you want games analyzed beyond "this move gives you a position with this evaluation" then there's always this:
app.decodechess.com/I feel it would be more valuable to expand features for interactive studies instead. E.g. Have the solver address multiple replies by the opponent instead of just 1
