Esper said
So making friends isn't science then. Only saying I have certain traits like that where I do things and it isn't personal and I don't do sorry very well either because that would also involve lying. Basically I want someone I can relax around and those traits seem to allow that.
So how do I speak to someone on a personal level without pissing them off. I also am rather terrible with small talk. No ability to keep the conversation going.
I don't think you need a list of criteria to know whether you feel comfortable around someone you meet. Either you do, or don't. Hazing people out before you've even given them a chance because they don't seem to fit your criteria wouldn't be very... productive, to talk about it in more detached/scientific terms. Talk to people - if you feel comfortable, accept it, let that be, you don't need to check it against a list of criteria.
To be honest though, if you're unpredictable cold and brusque to people, and don't say sorry when you hurt people, and expect them not to be bothered by that... you're going to struggle to make friends, or to get close to people. A core part of that is caring about them, and them caring about you - so of course if you treat them like shit, that's not gonna happen. Your idea of someone being easy to relax around seems to mean neither you or them caring enough to get hurt or to argue or to ever have any responsibility/commitment to the relationship between the two of you. That's fine - everyone has mates like that, who you're friendly with but aren't exactly super-close to - but be aware that you'll struggle to find really good, lifelong friends who'll stick by you if you act like that and actively look for people who don't care enough about you to ever get bothered or hurt or whatever by you.
Well, general conversation shouldn't piss people off. If you are pissing people off, you need to look at what you're doing that's consistently angering people. Just be polite, and try not to be abrasive. As for small talk stuff, well, lots of people are shite at it. I am, too. Talk about yourself; your interests; and ask about them about their lives. Show an interest in people and their experiences and their thoughts.