I Am In Need of True Friendship

It seems like i'm always the "backup friend" for my friends. Like when i call or text theyre always busy with some other friend and they treat me like crap. They only contact me when they need something or if all their other friends are not available (and its very rare that they'll even contact me) Like wtf is wrong with me? I'm never that person who everyone wants to spend time with. Or anyone at all for that matter. Im a loser. Thats why my username is alltimeloser.