Ghosted and blocked for no reason from an close online friend after only talking for 3 days

I’m a 14-year-old guy from Egypt, and I recently met a 14-year-old girl on TikTok who is Lebanese and lives in Kuwait. We became friends incredibly fast—within just three days, we were talking non-stop about everything, including our families and private lives. We got so close in that short time that we even told each other "I love you" before she went to sleep one night. She was preparing for a trip to Greece, and the morning of her flight, I messaged her at 5:39 AM to check in. She saw the message but didn't reply.

Shortly after, everything changed. She didn't just stop responding; she changed her profile picture to solid black, changed her username, and deleted all her videos. I was confused and started looking for answers, which is when I found several of her other accounts. Most of them seemed like older "alt" accounts because they weren't very active, but I knew they were hers because they still had her old profile pictures. Eventually, I found one account she was actually using and commented on one of her videos. As soon as I did, she deleted the video instantly and blocked me. Later, on Valentine’s Day, I tried following her from my main account, but she blocked me on that one, too.

To this day, I have no idea what I did wrong or why she cut me out so aggressively after we were so close. I’ve tried to reach out just for an explanation, but I keep hitting a wall. If anyone has experience with this or knows how to handle a situation where a friend completely disappears and blocks you across every account they own, I’d really appreciate the help. (I used ai to help organize the text) am not ai