I [26F] am either a bad person, or ugly. Every guy I ever liked (or even remotely wanted to date) has rejected me. Feels so hopeless.

Hey Dating.mobi, I'm feeling a little depressed right now. I just deleted Tinder again. Really sorry if this gets emotional.
I'm 5'7 and I weight 149 pounds. I'd have been embarrassed to write that before but I feel like I need stark honesty this time. I don't think I'm fat, but maybe I am? Definitely this latest string of rejections has me tempted to overeat again and I've struggled with my weight in the past but I thought I was finally at a place of self-love and acceptance and that my size is what it is and I'm beautiful anyway as long as I eat healthy and exercise (because any other way of thinking makes me eat my misery) Starting not to believe it again.
Ever since I was 19, when I had my first crush, I've been rejected over and over again. By all different types of guys, tall, short, clever, sporty, outgoing, atttractive, unattractive (but I thought they were hot), shy, kind, confident, I've gone for every kind of guy and they all eventually fade away. Most of them I knew IRL and we were friends beforehand, some were only acquaintances, and now some are from online apps.
I used to dress a little crazy, but now I dress very conventionally and I like to think I do makeup pretty well (recently gotten more into it). I'd say I have an attractive face. Many of my friends and guys that I have dated have called me cute/pretty. Some have even said beautiful.
I teach kids around and under elementary school age (I'm super wholesome!), and I'm studying for a big exam related to a job in a more difficult field. I have lots of hobbies, I play piano, video games, judo...
I've learned to listen more, I can carry a conversation well, I can on rare occasions be funny and I almost always get asked out for a second or third date.
Occasionally guys have chased me but for whatever reason at the time I wasn't into them and now there isn't anyone like that. This time round on Tinder (my first time using this particular app actually), I got a guy who I went on 7 dates with, we had a semi relationship-talk on the 6th which didn't really go so well and then he asked me out again so I thought he was still interested but it turns out he just wanted to keep me as a friend. But he didn't say that, I had to get him to admit it. Since he admitted it he hasn't replied to my last message.
And I also went out with a player who I knew was a player but I was already hooked on the first date. We were FWBs for a while. Eventually I got the strength to cut it off after a few months. And of course, an endless string of first dates that didn't pan for whatever reason.
Sorry if this sounds really emotional, I just feel so hopeless and stupid, like there must be something big that I'm missing. What the f*** is wrong with me, do I have some huge psychopathic personality flag that I'm missing? I make friends very easily, why is a boyfriend such a hugely different step?
EDIT: A list of my bad traits. I'm scared I'm boring sometimes. I can be a little weird. I laugh at inappropriate times. I fart in my sleep (lol sorry). I have a savior complex, I'm always the one who has to help even though I don't know someone that well. I can get irritated easily by things like whistling, although usually never with the person I like. I'm quick to silently judge. I'm a gossip.

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tl;dr: What the hell am I supposed to do differently?


Source.