Self acceptance to me would mean that after an experience like this you do not harshly criticise yourself, you have compassion for yourself. As for whether you isolate or not that depends on what you want - do you want to be alone or is it more you would like to be in company of others if you felt more comfortable? It sounds like the latter to me.

This is such a big topic I can't go into too much detail in one go or it will just overwhelm you and I'm guessing you feel overwhelmed already.

Some people are just 'different'. There can be a variety of reasons why, genetic, neuro, cultural - loads more too no doubt. Often fitting in can be harder for 'different' people - social behaviours may not be as easy for them. The funny thing is it's often their 'difference' that can make them quirky as Starrysky describes, and in some peoples eyes that is charming.

From what you write here if you were sitting with me I can more or less say I'd find you quirky/charming - you remind me very much of a friend of mine who overcame SA. He still says awkward and unusual things but also says some interesting off-beat things too.