I can't stress enough how isolation is only going to make dealing with mild sounds more and more difficult.
Please see about retraining to accept sound into your life again under care of an audiologist or psychologist that is familiar with the problem.
I'm saying this as a medical professional in the field of audiometry.
Avoidance can only lead to more misery, social isolation and possibly deep depression. There is a way up and out but it's hard work and nearly impossible without professional help.