Usually puzzles start from a position where one side has a clear advantage and a single good move. It depends on your puzzle rating, but many puzzles include an important defensive component (e.g. preventing the opponent from mating you while you keep the advantage). However in low puzzle ratings I believe it's more mate-in-X, material grabs, and other simple attacks.

You can also use the defensive theme on Lichess: https://lichess.org/training/defensiveMove