Most times when we feel rejected when we are actually the one's that isolated ourselves. We sometimes craw into our shell seeking for someone to call us out.
You complain no one is reaching out for you, no cares. How many have you reached out to? Do you care about others or you just want them to focus on you. The World does not revolve around you. if you wish to be loved, cared for them do that to others first.
Most of us complain about having no friends, you make a friend today, tomorrow you are enemies. Don't you think you may be the problem? You can't keep friends if you are self-centred, you want them to always be at your beck and call when you are not doing the same for them. You want to be worshipped when you don't worship others. It doesn't work that way.
If you wish to get known, then make yourself known, mingle with others, socialize and have fun with others. You can start a conversation, stop hiding under the pretence of being an introvert. Stop feeling you are not the social type when you know deep down you really want to socialize but you are restricting yourself.
Absolutely! If you will not love and care others, then you will be forgotten as well.