Is it normal that i can’t form complex friendships with people?

I’ve never been able to form complex and lasting friendships with others. I have no problem making small talk and starting friendships but I can’t relate to others or make a friendship last. I find it hard to find things to talk about with others and as a consequence, I end up as the one that is just ‘tagging along’ in a group or at social events. I find my sense of humour often differs from other people’s and the subjects I usually talk about often drive friends away.