I think bro this kinds of people think that everything and every one is/ are beyond them so bro to build ur confidence try to challenge jr self i mean for example if u arent confident around women challenge ur self in places u find a lot of them give them an eye contact and gradually u find ur self confident and also its important to hang out with confident people as well and note that in your life u are one to the world but for u you are your world ur existence doesnt mean any thing to any one but for ur self u are the best and confidence comes that way ithink bro