What kind of outs do you make in games? Weak contact? Strikeout? On what type of pitches? Do you have weaknesses in certain locations?
Maybe you can ask your coach if you can write an at bat journal during the games.
Make some notes like took first pitch down the pipe and then chased a slider slightly off the plate, rolled over a sinker into weak pull side grounder etc. Or maybe have someone on the stands do it for you.
That will give you an idea what you are doing wrong in games so you can specifically work on it.
Sometimes it is just nerves in the game. If it is maybe even visualize that you are in the batting cage during a game.
But it could also be a flaw, mechanical or just lack of practice that only shows up at game intensity, some stuff works in practice at low pitch Quality (or even at a high velo machine if it is consistent) but not in games.
You could also post a video here or send me a direct message with one if you don't want to post it publicly as have worked with some hs and college hitters.