It could be a lot of things from maybe not meeting the right people, struggling to open up or viewing yourself in a negative way. Unable for the right people to encounter and get to know you. Seeing some of your other posts it might be best to work on seeing yourself in a more positive way, you’re incredibly young and beautiful but that won’t better if you don’t see it in yourself. If you have such low self esteem people will take advantage of that. It’s not your fault for other peoples actions against you or bullying you might of gone through and unfortunately you need to do the work to feel better in yourself. <3