my crush doesnt like me back and its really playing with my self esteem

just to preface please dont judge i cant help the way i feel 🙏🏻🙏🏻 anyways i had a crush on this guy on tt and one day i dmed him asking a question and a follow up question ig and he replied. And from there he requested to follow me. Then we became mutuals and he was friendly at first like he introduced himself ig and we had small talk. Then i posted my face on my story one day (a video) and he liked it and an hour later he sent a video which he hadnt done before. Then he sends me a screenshot showing that he’d actually tried to send me two videos a few days ago but they did not go through as my account had been restricted back then. From there he started to send videos every day and we have had a couple conversations. Some pretty long he even sent a few voice notes before. But anyways its been almost three weeks of this. However i noticed he doesnt always respond. Like eg if he sends a video and i reply with something he will reply but if i try to carry on the convo by asking a question he wont answer sometimes and go back to sending videos? But then he still tries to make convo with me? I have posted two stories of my face which he has liked both of but idk. Yes i know your thinking he just likes you as a friend but i was confused as to why someone would do all this with someone who they literally dont know? Like online friends im sure get to know each other properly before doint this. And its the fact that he started doing it everyday after that story. But anyways he posted a video and some girl another mutual of his commented some reaction meme and he replied saying something along the lines of ‘this sound kinda matches your dms twin’. And i was so upset bc it made me realise that he didnt act this way bc he found me attractive; he does this with every mutual. I felt like shit honestly. Hes even commented on another post of hers complimenting her but tbf she always comments on his posts complimenting him. It is stupid to let this get to me this much bc i dont know him. Its just that hes so my type. Its so difficult to have someone who your so physically attracted to, to not feel the same way about you. It makes me feel inferior and not good enough. I feel horrible and not pretty enough. Like i cant help but think maybe if i was prettier he would actually try to start more conversations and blah blah. Ive always been obsessed with my appearance tbh.It doesnt help that he reposts kinda often ab a female celebrity crush he has. Wont say her name but shes quite popular for being pretty. I cant help but think maybe if i looked like her this wouldnt happen. That he would actually be interested you know? I just feel so undesirable. And im so disappointed at the fact that im not special and that im not the only female mutual he does this to. Like they probably message just as much if not more than we do.Which sounds so corny i know. I mean i kinda assumed he didnt send this much videos to other mutuals since the videos he sends are pretty targeted at me eg they r about the place i live in and that other mutual lives in a completely different country. Anyways what do u think/ how woukd u interpret his behaviour in regards to how he feels about me? How do i stop feeling so upset and insecure? Also any advice on what i should do now? I was thinking of going cold turkey and not sending videos or trying to make convo again. Thank youu!