well under 30? are you skilled with any role?
i think as you are 3 then all of you choose one fav lane of urs , then 1 go mid , one go adc , o go top or jungle , then you 3 can win the game , and learn the positive and negative sides of a champ of urs , and learn to play in a team , as a band name "five finger death punch"
and also ask your friends to choose champs accordingly i mean tank , mage etc etc