You need a personal party. The public match making people doesn't have the imagination of how to use the hero rolls. As a marksmen, the tank will leave you for dead as if he is playing a 1 player game. You never get defense, but you will witness that your opponent will always defense each other in 100 of my matches, it is the same thing. The algorithm is designed for you to lose no matter what. There is so team balance, Mobile Legends is just all about the money.