Hello, I am fairly new here. I would like to know if I have a disorder:

Here are my abnormalities:

I don’t like anything, I obsess over it to the point I cry whenever I think about it, mostly characters or even real life people.
I like to target a weak person who has no friends, befriend them and turn them against one person, then introduce them to others and watch as dislike for one person spreads.

I frequently get sad whenever I think of how the entire universe will end what’s and point of anything?
Whenever I get excited, I move my hands back and forth at the wrist.
I like to change my personality a lot whenever I get obsessed with a person or character.
I speak too loudly and too fast and I mess up whenever I talk to people. They can’t follow my train of thought.
I can’t focus on one thing for a long time- I’m improving on this but it’s still a problem.
I have friends, but they get boring and I get obsessed with another friend.
Sound always is too loud for me. I’m sensitive to loud sounds.
I laugh at sad things.
I hate when my workspace is cluttered. But it’s only my workspace that makes me mad.
All my friends are there because they are of use to me.