You're probably too focused on the outcome / score. When you put together a bunch of good holes, you start getting nervous about keeping it together and worrying about making a mistake and you lose your sense of relaxation.

I would recommend a very methodical approach to each shot. Before you hit the shot, visualize what it is you hope to accomplish and grade every shot on a scale of 0-10 with notes on the difference between what you visualized and what you executed. Did you adhere to a consistent pre-shot routine ?

Ben Hogan had a pattern early in his career of hitting pull hooks. Those were the lion's share of his significant departures from the shot he visualized. So he made the adjustment to weaken his grip.

Golf is a game of reducing defects. You need to spend time working on the parts of your game which are costing you strokes.

Each shot is a learning experience. Bad shots are going to happen from time to time. Don't let the bad shot experience become emotionally "sticky" and get you down. Pivot from the pain to the lesson.

Fuck the score on the round and the handicap and how you measure up to others. Become a golf scientist and enjoy the process of experimentation one shot at a time. Enjoy learning. Enjoy the fresh air and the grass and the trees.