"all settings are still the same as always" your opponents change everyday, their Av. Qty, their formations, their tactics, but you stay the same! That is your problem at any level, you are predictable and thus easy to beat.
Best to rethink the team, their are no GOLDEN formations and eternal tactics. Just dum managers, do not be one of them, change!
Be like water my friend be like water, ever changing, get some flexibility into your team, play more formations and test out tactics, never stop! This is T11 not Candy Crush. You have to think more and more, not zone out and numb your mind. Good luck hunting for new things dude.
Peace out!