Hi, if you're using Apple device, you should have the Game Center app. Of course you need to login and then, you can add people there by clicking the friends options and then "+". You should see a window where you can write name and send request!
Hey, feel free to add me Sasha0487 :) You can choose gift whatever you want, anything will be more than great, I appreciate anything you are willing to send! Thanks so much <3