Why is this game rigged?

Been playing over 300hours now and 290 of them has been in online career.  And i started pretty early on to suspect that something was not right. 

Like sometimes your char will block a hit when you dont even press any of the block Buttons. 

Its a bit weird that you always have  pretty much the same win streak as you do lose streak. And i noticed that when you win alot your punches And kicks dont do the same amount of damage And you get rocken alot easier. This has been tested by facing the same opponents And if i have lost alot i win pretty easy And if i won alot i losepretty easy. 

So i started to google about And sure there where many other people who noticed the same things And its something ea games done before like in Fifa. 

But I dont understand why yoy do it. Ufc is about skills And since we level up in online career there is also stats that help you get stronger. I totalt lost the intressest now that i know there is dda i think its called in this game.