I used to be like that when I started playing. I was super scared to run dungeons without people I know because I couldn't bare the idea of strangers insulting me or kicking me or whatnot.

Since then, I figured out that really, there are jerks everywhere and you'll come across a few of them along the way. They might say mean things or kick you for the wrong reasons or no reasons at all. It's really no big deal.

Don't worry about it. It's part of being on an MMO to be honest.