I think, actually, this community is better with second chances than not. How many times have the legends of horror been allowed back on games? Enough that people freak out on the regular because it has happened.
The key is, you have to actually change if you want the second chance to work, barring the extreme corner case of 'someone really was out to get you for some stupid reason, you did nothing actually wrong, but fell victim to the rumor mill as somebody without a support network of any kind that made you out to be someone you're not'. (This has assuredly happened here and there, too, to various folks.)
Not changing and just going back -- even to another game rather than one that booted you -- to try again with the same shitty behaviors that made you unwelcome elsewhere isn't going to do it. You're just likely to get another place added to the list of places you aren't welcome.