My most successful one so far has been the one below
GK
RWB CB CB LWB
DLP BWM
AM AP AM
AF
Instructions:
Retain Possession
Short Passing
Work Ball into Box
Run at Defence
Look for Overlap
Play Narrower
Push Higher Up
Hassle Opponents
Stay on Feet
Use Tight Marking
Lower Tempo
Still never won the Champions League but got back to back: league titles, capital one cups & 1 FA Cup
Team used was Man Utd. Changed tactics for my 3rd season unsuccessfully not winning any titles, now moved to a different one still for my 4th season with a lot more success. Will post that one with proper screens tonight if it continues to be successful!