Android phone keep broadcasting SSID

I didn’t have android devices for years, I got a Xiaomi redmi 7 for my son but I don’t know why it keep broadcasting a SSID “Redmi” From what I understand that the “WiFi Direct” (settings/Wi-Fi/Additional settings/WiFi direct) I don’t see any option to turn it off, how can I prevent to broadcast any WiFi but allow to connect to an external WiFi network ? I’m also surprise it’s won’t connect to 5Ghz, I assume it’s not compatible but that really funny for a smartphone bought in 2020