Losses are easy to reflect on. But I've met very few leaders who would criticize the wins.
Let's play this out.
When you make a mistake or mess up, it's easy to go into reflection mode. You wonder what you can do to do better next time.
When you succeed and you don't reflect on it, you're saying to yourself. "nothing to learn here."
That framing, though, is death over the long term.
If you're not thinking about why it worked, if you don't have a theory, then you got lucky.