How does fb know what I search on LibreTube (Pipped)?

I use fb through the browser just for reels. It's a fake profile with no friends. All I do is just flip through whatever is in my feed. Don't search for anything. Don't even like anything. It was created using an online number while I was on vacation in another country at the business center of a hotel I was at for one day. I use it through the browser Vanadium. Don't have the app. Also always through a permanent …

browser don fake flip friends privacy profile reels search vacation