There's a video on YouTube titled “FC 26: Competitive Mode vs. Realistic Mode Comparison—Realism, Physics Effects, and Wind Effects Tested!”
At 3:00 in the video, we can see that in competitive mode, players twist like noodles when dribbling, no muscle fatigue, no inertia, no joint movement restrictions.
And at 2:34, when passing in competitive mode, the ball slides as if on ice.
Please fix that. we crave an exciting game, not controlling a noodle to play marbles.