how do i join random people that arent on my friends list

[celest beacon]

yup

[blazing inlet]

You look for a group here or simply use the matchmaking function. And can always add the players as a friend after 😆

[scarlet pond]

you can walk up to a player, it should prompt you with the relevant button to press to interact, then you should have the option to join their fireteam (if they privacy settings allow for it).