OK so this is the first tactic in FM2020 that kept me going and being irrationally successful.
In my so far chaotic and unsuccessful carrer using my own tactics (fired from 2 clubs in Danish lower leagues), I took it to Toulon in France's 4th tier. Toulon had a weak roster for this league and I was expected to battle against relegation.
I went to Ligue 1 in 3 seasons with finishing first in National and Ligue 2 (respectively 3rd and 2nd tier) with most goal scored and least goals conceded (not by a huge margin with other top teams though)
I found the TM to be the key piece of the offense, posting equal figures in goals and assists.
I am now sitting between the 8/12 places in Ligue 1 in December with a draw against PSG at Parc des Princes.