I had many games where i did a sacrifice or ignoring a piece that was under attack but they never made any puzzles
can someone tell me
It is automated... In your case, 6 of your games are in puzzles:
https://lichess.org/training/of-player?name=Pranav_Arunprasad
yeah but those arent even my best games
Maybe you should show as an example of a position you think is puzzel worthy, and we can probably explain why it isn't.
https://lichess.org/TYqIEIhk/white#24
That would be a bad puzzle because while yes, one move is a mate in 3, there are at least two alternatives that are completely winning, (and a third alternatives that is arguably winning).
But mate is always better
Its better, but its not the spirit of puzzles...
Wdym