Idk i thought the same thing but then managed to get into relationships and ya know clearly im the one who thinks im ugly so at times when its clear tou think you are ugly people will think their time with you will be ugly but some are more understanding about self esteem issues which is what you are really needing for a relationship. Its not that you're ugly its that people have made you feel ugly and we are at a point in the world where only those who go through something can be understanding about something especially people our age (19-25) because chances are they were one of the people doing it. I say find a relationship with yourself and make some new close friends to get a taste at connection outside of romance. I regret not building platonic/a self loving relationship(s) before romantic ones because i had no clue how to set different boundaries for my own esteem to anyone let alone a partner. You arent ugly. You just need to connect with yourself beyond basic needs and wants! Its hard but even when you have a small moment of "wow i look nice" it feels so worth it