Three months or so ago, I was in the same spot. Ready to uninstall it. Then I watched a few of TTBs videos and his game seemed so different from my experience. I said to myself: this can't be, I must be doing something wrong! That's when I decided to go knee-deep into the whole tactics stuff, something which I have been ignoring in every PES so far out of laziness and because I thought ML was essentially like FIFA's Career Mode: just pick a strong team and don't worry about the rest.
The other thing I liked about TTBs approach: he doesn't complain about scripting. He sees the AIs limitations and accepts them as a challenge and tries to figure out ways to combat it using the game's mechanisms.
So over time I discovered (with the help of the guys here) things like "Players Joining Attack", "Support Range", "Hug the Touchline" etc., all of which I had never bothered with but which can make a huge difference nonetheless. I also started to study my players closely and generally follow the program's suggestion to improve weak spots in my teams. I studied their skills and stats and placed them accordingly on the pitch. That alone is a quite fun part of the game.
I also patched the game (PC) like a maniac. Literally tried out every incas dt. Now I decided to stick with Mixed_Bravo, playing on EvoSwitcher speed 2 bars, 20 minutes, SS. It's simply the best football gaming experience I ever had. Yes, there is rage-worthy stuff (as you saw in my 10-points list) but the satisfaction far outreaches the frustrations for me.
You should give it another try. Early stages ML is tough as a nail. Just try to replay matches that you feel cheated in with different tactis, that's what I did (I know
@Emroth wouldn't approve) and I learned a lot. Sooner or later the point will come where you feel more confident and then you can even take the AIs biggest bullshit.
I am hitting winter transfer period now. Looking forward to scout the market for some quality players.