Loses

Is just with me or in some saves we have weird loses?
I know you may think im new to the game or that i thought that i could pick a team and be invencible easily but no, im not new to the game but since i have fm16 in most of my saves i been having some weird results against weaker teams,

I've tried many tactis from attacking to more normal and controling ones and i even did something that i never had done before which has to copy tactis from other people here in fmscout or in another places, and nothing changes, i start a save with teams like Real Madrid and I lose, i been searching and i found people who have the same issue and i wanted to know if there is someone in this site who experienced something like this, and just to remind in not new to the game

Also wondering, had a couple of moments in my Sporting CP save game and, I could beat teams like Arsenal, At. Madrid (in the Champions League) and also domestically I could beat Porto with margins as large as 3 goals..

Surprisingly, season in season out, I have NEVER (literally) beaten SL Benfica. Adding salt to injury, I lose with marrgins like 3 or 4 goals. I'm being led to think that some teams are overrated.