You might have to do it on your xbox , it's a little difficult on the phone app . Bungie.net .. click on clans ... it will say it looks like you're not in a clan ..hit the little blue search in the paragraph below ..im sure it will take you to the popular list .. and i remember correctly in the top right hand corner its a a drag out bar , you can search my name or my clan .. and you can go on Xbox one and add me and send me a message .. i will help you through this bro .. looking forward to hearing from you .. ill be checking my app today frequently