I keep joining the same server

I don't know why but frequently I like to change servers to see new offers but I keep joining the same. There never is any friend of mine there but for some reason it keeps happening even after I close and open roblox again and even more weird: it happens so much more when I'm playing on mobile than when I'm playing on pc. I left a server recently and joined idk 3 but joining friends cuz I was doing trades from reddit and then I again join sum random and guess what: I joined the server I was b4 joining the friends again. (Recognized cuz the same beggar from b4 traded me again). I honestly have no clue on why it happens. Is this because of my country? I'm from Brazil and from what I know we don't have Brazilian servers — usually when I join I end up on spanish servers. Please someone help me, I js wanna join different servers but not full ones 😭