How a goalkeeper performs in a given match is completely out of your control. Whether or not your AI teammates will intercept any passes is completely out of your control. Your first touch, for the most part, is completely out of your control. Whether or not your AI teammate is going to deflect a shot into your own net is completely out of your control. Nevermind the auto passes or when you put in a tackle it goes back to your opponent over and over. There are many more.
Now I get that over the course of many games, it most likely evens out. Some games all of this will be in your favor and you'll win a game you shouldn't have and others will be the opposite. I guess it's just frustrating that so much seems to rely on these factors that we can barely alter on our own. Would you prefer it to even out over the course of an individual game or over the long haul as it does now? Simply removing the randomness wouldn't be the answer, as random things occur IRL.