WTF 3v3

Hey guys i dont know if im missing something or if this is a joke but every 3v3 match i go into its like the players have never played the game before.Every single match the enemy team runs into the tower and just act like theyve never played before ,then when i check there levels afterwards they are all the same level as me( still a noob but how do you make it to level 29 without knowing you cant just stand under the enemy tower and aa it ),i just went 41-0 ,im not braging ,i just really wanna know whats going on with 3v3 lol