How to play team fight tactics
Step 1: Buy a tank (knight, or whatever) Step 2: Level him up as much as you can throughout the game, and make him as tanky as possible with items. Step 3: Grab every assassin that comes your way until you have 6 assassins + 1 tank. Make them attack as fast as possible with items.
Everyone will focus your tank because of the absolute garbage AI, and your assassins will be critting for 1200+ because of the stupidly broken 6-assassin bonus. The best part is ITS NOT EVEN HARD to get 6 assassins. There's 7 to choose from and NONE OF THEM ARE GOLD TIER.
That's it! Literally nobody can beat you. You don't even have to save your money for interest/economy. Screw all that nonsense, that's for plebs. Just spend every dollar you get on upgrading your tank and buying more assassins, and you'll be looking at a victory screen in no time.