Does my friend know about me?

So I made an account to upload sensitive thing, just upload like usual, but suddenly this day, my friend like and comment just this ❤ on my video, it's sends me cold sweat and immediately delete all the video and made the account private

I heard we can know because of our contacts, but is she really knew about me? (Jhon) despite all her friends contacts? My videos just criticism with text and ai voice, no bio, the @name is also random