I dumped a girl I was dating and I’m struggling with my insecurities

Today I (24m) dumped a girl (24f) I was dating since December. This is the first time I ever initiate the end of a relationship and I’m proud of myself but deeply scared and hurt by it. It’s a long story of why I dumped her but basically I caught her in a lie with screenshots to prove it. She pled and cried begging me to move past it but after my most recent ex taught me to respect myself more and that’s what I’m doing. However I feel very insecure and hopeless that I’ll have a lot of trouble finding another woman because of my height (5’3 I know embarrassing) while the girl I dumped will move on with another man in less than a month most likely. I don’t have options like she does and it makes me anxious that I need to restart and most likely go a very long time without female intimacy. FYI my last relationship ended in September after 4 years.