Personally I don't get being an adult and being into Roblox, like at all. Not saying it's wrong to, but there's literally nothing you can really do with it. You can't talk on it cause it's full of kids, you can't make friends cause it's full of kids, you have very little fandom freedom because you have to censor yourself in a fandom full of kids, the memes are unfunny because they're made by kids, and with how deep the pedo problem goes you're always 2 steps away from either meeting a pedophile or being mistaken for one. Half the players are banned on EASI cause half the players forget they can't talk about murder murder weed sex murder around kids, because they're not kids. The only way you could enjoy it as an adult imo is if you only used it for like two games or if you're incredibly stunted ergo you fit in with the kids. I used to play it in early college unaware of it being a kids game Dw I didn't traumatize anyone, I mostly just used the chat function for talking about fandom stuff like ships and hcs, and being confused as to why everyone responded with "yyes..,, i ljke tha ccharacteere", but when I found out the demographic, I kinda didn't see the point in playing it cause... I'm not a kid, nor am I a babysitter.
I get the appeal of a simple online game to act a fool in, but I'd either suggest one from the 2000s that kids don't use anymore (Club Penguin, Animal Jam, Toontown, etc.) or Gmod.