If speaking in general about the tactics uploaded here and at other forums, tactics that have brought great results, they have one thing in common and its that you need player that are in form and with great morale for them to function. If using really attacking tactics that uses a high pressing game, its crucial that your players are up for the job.If they lack in confidence or in form, they will simply play nervously or fail to get first to the ball. It does not matter what "great" tactic you try to play if the plaeyrs are out of form etc. Here, you need to grind out a few result and get morale back on track.
My best advice would be the following.
1.) Look at the squad you have, do you have any strengths or weaknesses compared to the other teams in the league, like some pacey forwards or perhaps some really slow fullbacks etc?
2.) Next, set up a new tactic with the TC. use a more Balanced approach
3.) Use the players to their strength and perhaps some players to make up for your weaknesses. Like if you have a pacey forward with good off the ball stats, them play him in an advanced position and let him concentrate of the attacking movements only ( i.e no closing down).If you have really slow DCs, then perhaps you need to play a DMC and use a deeper d-line etc etc
4.) When giving out the roles, make it balanced.Not too ,many player on attack, not too few on support etc
5.) Play some games in full mode and use some of the shouts to see how they effect the flow of the game. When the opponent sit deep, what happens if you slow tings down a bit and play wider, using overlaps etc