I soo feel the same as looping, and recognice alot of myself in him, these posts was a eye opener for me, so what i did was, startet touch, got a team that suites m formation ) im stevenage, but took control of Middlesborough in touch. Set up a tactic for boro that would suit stevenage and plugged and played, tweaked some roles, and when i was happy i went back to my stevenage save, i decided that i will KISS and only basically change the risk / reward factor, the mentality, worked a treat for me so far, i have as a policy to NOT change setup, keeping a somewhat consistent starting 11, if i go more attacking i drop defensive line, a bit, i use mainly 2 shouts through the games, shorter passing and play out of defense, i notice the team are performing WAY better than it did before.
Also i think its self believe that plays a a big part, believe in the tactic and the players, stick to it long enough and the results will become better, it sure did for me.
Ofc there are things that i feel that i can learn and improve with my tactic,but for now im doing decent, winning more than losing, so as i learn more about players and tactic i might start add / remove shouts.
that is my tips for you, hope it helps