Idk whats wrong with me.?

Idk exactly whats wrong. I know Im really alone. Like.. im terrified of ending up alone. I move around a lot and now we're finally settling in for all of my highschool year and i've never had a problem making friends.. but idk.. even though i have friends, even in ele. school, i've felt a gap between me and them.. and in middleschool and now in highschool too.. im always so alone.. and my family.. well, they dont know much about it.. i tried explaining it to my mom and she thought i was crazy.. and she wouldnt listen to me and started interrupting.. they make me so upset.. i cant even go to them... i hate being alone.. Idk what to do. Idk.. I feel weak.. and i want to stop depending on people.. and stand on my 2 ft even though im just in highschool.. i think its better to only rely on myself.. but isnt that seperating me more from others?