By and large this is a community of good folks, easy to get along with given a moderate amount of effort. I started this game at launch fully intending on experiencing all it could offer from a solo point of view, soon learning that eliminated a good portion of what is out there. Some things to consider when doing group content that requires a little more attention to detail
Be open to criticism: good raid leaders are not doing this to belittle you, but improve your performance. If you are not open to that environment, move along
Work at it: the raid's mechanics, your class skills, your communication, all of it comes into play
Get in voice: something else I had no interest in early on but is an invaluable tool for group content
Remember, thou art mortal: just because you are capable of steamrolling the content does not mean those in the group are there yet. Keep in mind the fact that we all started less practiced than we are now and no one is incapable of mistakes
If you put some time and effort into it, you are capable of tackling the tougher content in the game. There would be few better examples than myself, an older clicker tanking through Nitemurr stuffs (occasionally)
Each community is, in part, what you make it. If you are a willing to put yourself out there, to enjoy yourself and contribute to other's enjoyment of the game, good things will come.