What's the point of life if crippling, paralyzing fear is all there is to it? I work on being a good steward of my privacy as much as it brings me joy and satisfaction, not so much that it consumes every waking hour.
Whatever it is, review your threat model. What's done is done and there is little that can be done to redact any evidence you may have left on the internet. Are you able to stop doing whatever it is that is putting you at risk of legal trouble?
If it's an drug or psychological problem, you need to seek professional medical attention. Many people die or suffer life-changing illness each year fearing that their doctors will rat them out for substance abuse. Don't be one of them. Patient privacy laws, at least in the US, prevent your doctors, therapists, etc. will protect you if you go and seek help. The main thing that they would have to disclose is if you make direct, credible threats to other people.
If it's a criminal operation or worse, lawyer up and good luck.