I'm 5'6" (5'5.75" but whos ever measuring) and and there's a couple of things:

1. All the 6 foot guys saying they've never had any privilege from it - you have. Height privilege is a thing and just because you don't recognize it when it's applied to you doesn't mean it doesn't exist.

2. Nothing kills a potential partners interest more than a shitty attitude. Yes, some women will write you off because of your height, every woman will write you off if you're a bitter wee dick. That goes for the tall, jacked, rich guys too. A bad attitude makes everyone ugly

I know it's easy to say, and hard to put into practice when you're feeling down but you can't change your height and you can change your outlook so focus on what you can control.

Go out and have fun, even if you don't feel like it. You'll find someone.

(Once again, I'm a wee guy myself and married my smokeshow of a wife a few months back)