Question about good sportsmanship when playing games?

Suppose I am playing a game with others (e.g. chess). I know that generally good sportmanship includes shaking hands, saying good game after a game, following game rules, and being polite (e.g. no cursing, no putdowns, etc.)

Just want to clarify: What is considered good sportsmanship in these circumstances?

1. You win by a big margin.
2. You win by a narrow margin.
3. You lose by a narrow margin.
4. You lose by a big margin.

Generally, win or lose, I just say good game after a game. Then, I don’t talk about the game unless the other side wants to talk about it. If the other side is just talking about how badly they lost to me or how strongly they beat me, I tend not to say anything. Main point is that the game is over, and I don’t want to say anything that may be misunderstood, especially at a time when some people are emotional.

Occasionally, my opponent would like to go over certain parts of the game, such as moves that my opponent or I could have made instead that would have been better. Such conversations tend to occur more in scenarios 2 and 3. These conversations are usually rather interesting and educational.

Want to hear your thoughts on what you consider to be good sportsmanship.