Suddenly Losing all matches UT

It's just game mechanics or what

Players movements changes

Can't tackle properly 

Can't score goals

In 10 matches my average expected goals was 3.6 

I scored only 1 .. opponent with 0.5 ratio scoring 3 goals... 

After winning suddenly team becomes bad

No movements no aerial duels 

No good passing nothing..

Opponent scoring from least expected attacks...