How to add friends,is it possible?

Hello @Casij22745 and Welcome to our Friendtastic community! You are in the Candy Crush Friends Saga forum, so I assume you are asking about that game.

In Candy Crush Friends Saga, there is currently no feature for players to add friends. Instead, friends are randomly assigned to you in a team, typically a Dachs Delivery Service team. You can see those players by tapping on the team icon at the bottom right of your screen. For example, my list is full of random players as well as some that I recognize as friends. If you have the Dachs Delivery Service event in your game, you might want to join an existing team to get friends. You can find or join a team by tapping the discussion below

 (the later pages have the most recent posts). You can "leave" a team and join another one, but again you cannot select individual team members.

Of course you can create a new team in DDS, but you will need to recruit players to join your team. Or, you might want to join a team already trying to recruit players in the "Find your Team" discussion. You can always leave if you are not happy, and then create your own team.