Also the people outside your work only saw YOUR SIDE of the story & probably arent used to challenging your behavior that is bad but judt accepting whatever you do.

The people in the company saw your bad behavior & saw the issues it caused in the work place & when someone is fired for bad behavior, people want to distance themselves from that person because they know the bad behavior & may feel if they befriend you after that you may end up behaving with that same bad behavior toward them. They probably feel that distance is the safest way for them not to end up continuing to encourage the behavior & safest for them to distance permanently.

Any time our behavior has a bad effect on others there are ALWAYS CONSEQUENCES in adult life. I think you ate just finding out what being an adult with adult responsibilities for adult behavior is all about. Until now, you have gotten away with acting like you did as a child.