That's how you managed to interpret what I said?
You are the fragile ego that I was talking about. You somehow managed to take what I said personally and already got offended by it.
Just like nearly every single multiplayer out there the game is not perfect, but you're playing the same game as your opponent. And guess what? They too want to be a winner. So if you chose to play the game, your options are improve your play, minimize your mistakes and be a winner, or you can make up excuses for the losses and most likely never improve.
What people seem to forget is that FIFA is hard. If it wasn't a challenging game, it wouldn't feel rewarding and therefore less fun in the long run. How many games can you win against a beginner AI until you get bored of it?
Just like in any other online game there will be people of various skill levels, there will be people who are bad, and those who are good. But short answer to your question is yes, everybody is bad, even those who are considered good. Everybody is bad at some aspect of the game, or more likely multiple aspects of it. There are so many important parts of the game that it is really really difficult to be flawless at it, there will always be mistakes and there will always be an opponent who is trying to capitalize on those mistakes. In a 1v1 game the only thing you can do is focus on your own mistakes and minimize them by improving any part of the gameplay you may need to. Defending, dribbling/skill moves, finishing, tactics and roles, players and their uses, playstyle, decision making, mental attitude/state just to name a few. This results in many different levels of "good/bad". There are people who are lethal when attacking, but will pull defenders out of position leaving massive gaps to be abused, and those who are impossible to breakdown but are as threatening as a puppy up front because they can't pick the right pass or can't finish. But no matter the match-up, there will always be small things that will go with and against you, always mistakes from both players that you want to capitalize on. It's up to you to capitalize on them when that opportunity comes.
Why are so many top players stay as top players? They don't randomly start getting "EAided" and stop being good. There's a reason why they are better than the rest of us. They figured out their weaknesses and improved on them. They don't fixate on the one time the ball went through their defenders legs (Which by the way can easily be user error in most cases - user misreads the pass and positions player incorrectly. It's impossible to read and intercept every pass, and your opponent is playing under the same conditions. The rest is up to how you both read and run the game) or whatever other crap that's happening and whine about it. If you pay enough attention and remember them, little things like that happen both ways. The in-game players aren't perfect and even moreso the people using them. But the good FIFA players focus on things that would help them prevent being punished, or on things that would allow them to capitalize and punish their opponent. But just like for any other game, and this is most important... they practiced and actually tried to improve.
tl;dr: FIFA is fucking hard. Our options as players are either to become better and be a winner, or whine about something and make up excuses that don't yield any results.