how to get a team on your name

list them down

What

If you mean how to get a flair (Ex: i have XSET o7)
You can go to user settings, scroll down, and you'll be able to select a logo

press three lines - top right

then press settings

you will then see the option to "change flair"

choose your team and join the debates here on vlr.gg

Xset for the win