Candidate moves are moves are moves that you want to play. For example
This is from one of the games I played. When looking at a position like this you would consider different options or your "Candidate moves" Here I was thinking Qc2+ or Qb6. Those are my candidate moves, and with some thought I opted for Qc2+.
Here is another position earlier in the game. My bishop is under attack and I have to decide between a few moves or my "candidate moves". My candidate moves were hxg5, Bf8, or Bc5. Candidate moves are kind of just the moves that you have an option to chose between, that dont have a clear better one. In the game I opted for Bc5. And candidate moves dont have to be the correct moves, in that last example Bf8 is a terrible move. Also, Qxb2 was another option.
I have heard of this thing called candidate moves what are they?