I haven’t dealt with crypto in years, so I’m not really the best source for some of those specifics.
As I understand it, the Monero protocol doesn’t maintain history between transactions, so it’s very much like electronic cash. if I were to go the exchange route, I would convert to XMR, send it to another exchange, then back to BTC. it doesn’t really matter where you buy it if you go that route. those transactions do have a cost however.
as I’ve said it’s been years and the crypto world is loaded with scams so I have no idea which if any of those are legit, sorry.
because spreading bullshit from anonymous accounts where you cannot even consider the source is somehow better