Similar problem
In my 3rd season with Liverpool.I need a formation and tactic I can consistently use in league matches. Currently I switch between attacking/pressing 4-3-3, 4-4-2, and occasionally 4-5-1. I have mixed results with each. 4-4-2 often works against bottom teams, otherwise I have change tactics and formation depending on who I am playing. I don't mind this problem in big cup matches, but otherwise it gets annoying. I'd like a tactic that is successful against all levels of opposition.
The players I use most often:
Defenders - Skertl, Agger, Lucio, Wilson
Fullbacks - Johnson, Cissoko, Insua
Midfielders - Lucas, Spearing, Montolivo, Gerrard, Muller
Wingers- Downing, Cazorla
Strikers - Lukaku, Suarez, Lloente, Carroll