I'm sorry to hear about your condition and your dilemma. Since you have expressed yourself quite well, it would seem that you believe you are more disabled than you actually are. You may be short-changing yourself.I am growing better slowly, and have reached out to a small church nearby, but find myself confused as to what to do to make friends. I am not socially inept nor am I shy in the slightest, but I am damaged, and I have no minder to tell me what is correct and not correct for a church.
In any event, since you wish to make more friends within this group of believers, perhaps you can approach the pastor after one of the meetings and ask for a private meeting with him. Share with him what you have shared here, and request that after the next Wednesday evening meeting you would like to speak to the gathering for five minutes.
Then tell the Christians there exactly what you have said here (indeed print it off and read it if you have to) and let it rest. Then the onus will be on those Christians to bear one another's burdens and thus fulfil the Law of Christ (as Scripture states).