How to get out of a loosing streak ?
Play to not loose for a couple of games to get some morale and dressing room atmosphere back, you need to start from the back if you dont concede your not going to loose.
Once I've suffered several defeats I wait for gap between games (7 days or more)
I then change training to defensive positioning and select several of your important first team players and praise their conduct, its a cheap way to raise morale I've never seen a player react poorly to it.
Next step, look at what your starting line up has been the last few games, and drop players who have played poor (if your whole team has been poor there may still be players playing worse than the rest of the team drop them)
Look at your players mental stats, during this tough time I'd favour players with high Work rate, team work & determination over other abilities for now.
Final step would be a temporary tactic to stop loosing, start out defensive and structured, playing direct passing and clearing the ball to the flanks.
Play a deep defensive line if your defenders have pretty high concentration, jumping reach, tackling, heading & marking, play less deep if they have a fair amount of pace.
Individual set the defenders instructions to lump it, you dont want any mistakes at the back. Setting their role to defensive centre back will do this.
Add tighter marking and get stuck in onto the instructions too.
That normally works for me, I normally get a 0-0, might nick a 1-0 win with it, I then either revert to my default tactic after it, or start editing this one to become slightly more expansive.