A girl i wanted to be friends with i followed on instagram unfollowed me. What should I do?

(I apologise for this long of a paragraph, extremely sorry) Hello people of Reddit. I followed a girl on instagram and she unfollowed me. Lemme give you some context. I'm 16 years old. So, I really have friendship issues at school. Backstabbing traitors and people I just couldn't trust. So I decided to pull myself away from them. Then, I wanted to expand my friend circle and making new friends,instead of rotting in this shithole. As I was scrolling I saw a girl that commented on a reel and I decided to follow her , thinking I could make friends with her. I repeat , friends. Just friends. I had no bad intent whatsoever. First I followed her and she followed me back aaaand we started talking (For context: that girl is from India and I'm from Malaysia) I shared things about my country to her and so did she. We shared our personal interest. In a healthy manner of course and I wasn't being a creep and talking nasty stuffs. Just was being a gentleman. Later on the frequency started reducing. She talks less and less. It has been 2 to 3 weeks since I talked to her. Today I decided to text her. To my surprise she had unfollowed me. I couldn't msg her...I was really heartbroken and I don't know what to do. Please help me on this. Should I just leave it as it is? Or follow her back and tell her that I do not have any bad intentions and I just wanted to be friends....or has she lost the interest on me? Please. I'm requesting assistance.