CTE develops over many years. You do not get it suddenly. It is a slow degenerative process. For most, the deterioration quickens in the late 30's to early 50's.

This slow degeneration is a good reason to start living a low risk lifestyle with good brain nutrition.

Punch drunk following a fight is usually a temporary condition. From your posts, you are not punch drunk. You are just living with a brain that is struggling. Your anxieties only make it worse.

My best to you.