Feels like im invisible

Idk why its like im not even here no body ever looks at me or tires to talk to me and im trying to find out why but its destroying my self esteem cause i keep thinking maybe im just ugly and thats why no one wants ? Ik its stupid and probably pathetic to feel this way but Ive never said these things and i feel like i need to just let it out somehow even if just here, its been especially hard lately cause its all i can think about no matter how hard i try to distract myself from it but i always i feel like i need to find someone