Is your kenobi relic 7?.... how bout those in the top 50?
What of your pilots relic 7 with 6dot mods?
Having a full 7star kenobi at relic 7 isnt enough to take a mirror match when the other teams pilots are relic 7 and yours arent. Likewise if their mods are 6 dot and yours are 5, they will roll over you.
You want to win at fleet. Relic 7 all the pilots in your meta, 6 dot mod them all. Make sure all your ships are full on all abilities and attacks.... Make sure to do reinforce as well. Then your ships are the best they can ever be.
Now if you lose its because of rng or the order you reinforced or the order you killed ships
Again having 7 star is great but its not what sets the top 50 from the top 100.... its the pilots and the care taken to level those ships up