Asymmetry is normal and you cannot address it (outside of repeatability of movement, aiming for no form degradation during high load).

As long as your movement does not degrade horribly, asymmetry is fine.

Even before strength training, your one arm is dominant, more precise. But this has an effect on your leg as well.

Doing unilateral work will never change that asymmetry. As you get stronger, due to drastically different activations of the nervous system between the sides, you will get slightly different adaptations.

Looking at powerlifters, most of them have visibly different sizes of hip, leg musculature between sides. They even have drastic flexibility differences where one hip goes deeper, or the musculature makes the barbell sit skewed on the back.