When you view a player's profile, if you see the "Add Friend" button, you can send them a friend request. In order to become friends, the player must accept your request.

You will be able to see the "Add Friend" button on players you visit from events and your team. However, you won’t be able to see the "Add Friend" button for users you visit from the Leaderboard section.

Another way to add friends is by searching for your friend's 7-digit ID in the "Find Friends" field. You can send a friend request by clicking the "Add Friend" button on their profile after searching for them.