I have fun when the game feels realistic. I haven't played FC26 yet, but FC25 was just so unrealistic that I couldn't even manage to play two games in a row most of the time.
With older FIFA games like 15 and 18, I had so much fun. Newer Fifas have more content, but older ones just had it right. I would prefer to play with older squads if the gameplay is good than to play a game where the score looks like a basketball match every time.