Do you think the reason you can't make friends is because you don't know how to be around people?

I was never popular and it was always hard for me to make friends. It didn't matter how nice or funny I was nobody wanted anything to do with me and I never understood why. As a result I don't know how to be around others. I'm so used to being alone it's almost a natural instinct to keep others at bay. I'm a horrible texter. You text me and I quit replying after a while because I can't hold a conversation for too long. I just feel tired and want to be left alone. I just am weird I guess. It's like I know I want friends and to be talked to but then when I get it I almost self destruct.