I rarely go off in this forum but WHAT!!?
Mind games are the heart of fighting game, if your above button masher status you have to have at least some understanding of the concept. It gets alot deeper the further you go into the game but even baiting a simple DP is a mindgame, mixups, training people to expect cartain reactions is all mind games. How deep it goes depend on what game you’re playing, which character you’re using, which character your oponent is using, How well you know each other, both players execution levels, general game knowledge of both players, etc.
Mind games are fighting games if your not using any you’re probably losing… ALOT.