Never underestimate your power and never overestimate your ability. We are just who we are. For most ones, we are average, nothing special. As an ordinary person, one has to win his wonderful future by hard working. What can we do is to contest with others by persistence, will and actions. Chances are right over there which do not come over to your side unelss you are ready enough to step out and seize them. Sometimes we just give them up because of timidness. Then, what else can be for us to blame?
It is not a big deal if we failed. At least we survive to fight for another battle and best ourselves in the next trial. Do not be oversensitive, actually, no one is caring you too much. You are the one who puts too much pressure on yourself. If you feel free to show your personality and do not get overburdened, you definitely sense it is normal to speak and act naturally.
Easier said and than done. The core point is we should connect to others. By opening heart and sincerely treating others as friends, you are surely to be rewarded. You hardly move further if you close up mind and keep an eye on any suspicious behaviour. If so, you find everybody doing weirdly. We may be teased or mocked, but it never becomes the reason of isolation.