Yelling at people is a sure way to get fired. You know that. Former manager has nothing to do with inappropriate behaviors.

I suggested to you before that you start looking for jobs that don’t require customer interaction. Both retail and food service has job positions that don’t require costumer interaction. Stock room or back room or warehouse or kitchen or storage. Not customer service. Speak to your management that you cannot handle this stress and ask to be placed in the back. Do not bring former managers up as it is irrelevant