Check out the results of all the tactics we tested!
i will just leave this here... Gélson wasn't even a striker half of the season, had to adapt him... And 3rd season with Sporting CP without signings, only with youth.
Best tactic i have played in this FM.
The only suggestion I can make is to try different tweaks, test for 5-10 test matches, then load to the beginning of those matches and play them again with another tweak, another tweak another tweak. What works well is different from patch to patch, so there isn't any "logic" I can rely on for these things. I know there are many sites that post articles about what roles fit together, and try to add reason behind it all, but this is a game, not real football Trial and error is the only way to make tactics if you want the best possible combinations.
For example, after testing, you find out you have problems in the back... Well, then you try out different things like change the D-line, change the closing down, marking, OI's, roles, player instructions, etc.