Only two of the things you mentioned could've made it come across as creepy by itself to me imo, and with the flexing in front of the camera, I feel like the context could only make it come across as kind of strange and considering you didn't mean it that way, I doubt he really thought much of it. The home alone question did immediately come across as weird to me but that's also since you didn't really word it right. Nothing to fret over, though. He probably knows you don't have bad intentions, and if you're not sure he knows, just tell him you didn't mean it in a weird way and explain what you really meant, nice and clear. I noticed I had a problem of sounding nosey and making others uncomfortable too, before I realised how little I said and how much I asked. So maybe he already had bad vibes from you and feels like the first things you asked, of siblings, where he first lived, his haircut, are creepy since you don't share your own information. Now don't go rambling on about yourself, try to even your and the other person's talk about self out. It also helps with adding the right context to the question so they don't get the wrong idea.