You shouldn't chose to "main" a champ based on the results of performance off a few games. What if those 3 games you played Annie match making decided to pair you with 3 sets of 5 people and at least 1 person on each team knew how to deal with Annie and gave each team at least 1 more person that listens to team mates.
Say your first 3 games as Annie you're completely useless and that Flash Tibber's stun doesnt last long nor does it do much dmg thanks to all the Tenacity Banshe Veils and MR they have.
Would you still wanna main Annie? You main a champ you are personally good at understand their mechanics and know how to out play your counters. Annie isn't god tier. The sheer fact that you believe that makes my brain shrivel up and cough