Need advice..

This year after my 10th I joined a new school for my 11th. I had a relationship last year that only lasted 4 months but it left me really bad I started hating myself, so there was this girl that helped me through it, she had feelings for me (according to her friends) and towards the end of our friendship, I felt connected with her I decided to ask her out, she rejected for some reason and I was at peace with that, so 10th ended and I started my 11th classes, now during my computer class I met this girl, let's say her name is N, so I dont know for some reason I started finding this girl interesting, I literally didn't know anything about her at that point, and in a way I think she resembled this other girl that helped me through the breakup, I don't really know about that coz I haven't seen this N girl in person that much, so okay I find her *** with the help of my friend and I messaged her in the pretext of asking for notes, so she sent me the notes and I started texting her daily for about 3 days just normal stuff and I asked her to be friends and she said yes, now she started asking me indirectly about my intentions as she knew I had a crush on her or something, so I don't know what happened but I just bit the bullet and told her I like her, she said she'll think about it and the next day she told me a clear no, I dont know but I was expecting a yes from a complete stranger for some reason, and yeah I was rejected, so she started avoiding me and ignoring my normal messages from that day on, I kept on begging and kept on proposing her over and over again and she would just say no and no again, now one day I called her over voice and that's the first time we've ever talked other than chatting, I did all the talking she was actually not interested at first and somehow I also got her talking towards the end of the call, she became friendly with me and everything was well for a few days, even though I kept on proposing her in different ways and she kept saying no she felt more connected with me, now during that time I just asked for no reason that whether she will miss me if I go now, and she said yes a lil, now towards the first she was that cold with me and at that point she really was like a friend, and one day I kept on venting and kept on saying how much I love which I really do but she just thinks it was like all the boys are the same which I dont think is true, so I kept on saying some stuff I dont' really remember and at the end of the day she said let's see and told me to be her bf for one day and I did the day, she said at the end that it was like any other day, and that ended, the next day I did some messaging and I think I guilted her coz she just went mad and told me to just stop loving her that intensly or leave.. I told I would be just a friend and now she's not like how she used to be, today I asked her if she's being a friend just to  be nice she told me 'yes maybe'... and today when I asked her if I was weird she said yes, yk she literally avoids all my texts and I keep on messaging like a buffoon, I wasn't like this and would never fight to keep someone in my life like this.. What do I do now, do I keep begging for a friendship that she doesn't want but it makes me happy because there is a little chance she might turn out to be my friend at last or do I let go and how do I do that without hurting myself..?