Hello nikolgiorgos!

I think that what i will ask you is more related to what u called "waveform".
I started playing this game with 2 more friends (we are now on level 4). Seasons 1 and 2, we were doing great and winning everyting. Suddenly, at the end of a season 2, one of my friends started losing a lot of games in a row. He had some kind of 10 points difference from the 2nd manager on his league. he lost 5 matches in a row on league and was eliminated from Cup and CL. We laughed a lot on him ... hahaha

... Until the same happened to me at the end of season 3 ((( haha.
I lost cup final to a 4-4-2 classic team (I played 3-4-1-2). It was the 1st time in that game i lost to a 4-4-2. My team was 10% stronger, but I lost 3-0 (and the numbers were all in my favour).
Then I lost CL half-final against an asymetrical weird tactic (some kind of 3N-2DMC-DMR,2MC, 3AM, 1ST) and I was playing 4-5-1V, trying to explore the free flank the opponent had.
And then I started having a lot of troubles on my league (which should be really easy).

Before the League ended, I thought about 2 possibilities (cause my team was like a plane going to crash a mountain and i needed to save it haha).
(1) There is some kind of wave of form, that no matter what you do, your team will lose straightly (and was exactly what was happening. i had already 5 losses in a row!)
(2) I figured out that most of my players had already played more than 40 matches! (i repeated the same team many times on all tournaments - and it explain the same what happened to one of my friends). Maybe it's something that could be tested!! (as you did switching your GK and ST)

So I decided to use a team of substitutes for my last season matches. I used players that played only a few matches and it worked. So it made me think that possibility (2) was right: there is maybe a limit of matches and then the players will start playing badly after it. Maybe 35 matches, 40 matches. Dunno.

I'm playing season 4 now and a team playing 3-2-2-2-1 butterfly is leading. The team owner doesnt dedicate himself to the game as the other league managers, his tactic is poor through the middle and he is winning matches he shouldn't win. He beated me with 3-2-2-2-1 butterfly when i was using 4-1-2-1-2ND. The match numbers were totally favourable to me (possession, shots, shots on target), but he scored 2 FK goals and another 1 on a CK, ending the match with 3-2 as final result. I watched other of his matches (he never watches) and the same happens: win matches he shouldnt win. That makes me think of possibility (1), where no matter what happens, the "waveform" is by his side and he will win matches that he doesnt "deserve" to win.

What do you think about it those 2 possibilities?

PS1: I'm new to the forum, but i spent some hours reading the entire discussion you created. (and at some point, i'm agreening with what Tactician said an year ago hehe)
PS2: Ok, i'm a beginner on T11, but i play football manager games since elifoot 98. So I understand tactics hehehe..