Please forgive me if this is the wrong place, I'm confused and just need a little help.

I have a 9 year old boy, a sweet but stroppy 9 year old lol I'm strughling with how to handle this!? my reason for needing help, my sons tablet is signed up with my email and so his YouTube searches are linked to mine. I went on to YouTube to look further into the gypsy rose case (for anyone who doesnt know it you need to look it up 😂) and down the search list was things like "naked boys" and "boy loses his shorts swimming pool" on a number of different occasions. I have no issue that he is looking up boys at all but what he is searching is this normal as He is only 9! Also do I approach him with this and how? He has made comments before about people in school saying he is gay and he just says that's disgusting. This has not come from me and saddens me that he could be gay but would hide it? Also is this something he would feel at 9. I would like to approach it in a way that he doesnt close in and not want to talk about it? Thank you in advance for help