How can we improve ovarian quality?

Among these most curious questions, how to increase egg quality, lifestyle changes affect egg quality, as we know, egg quality decreases with age, I can't prevent this. However, we can have some positive effects on egg quality with lifestyle changes, so what should we do for this; one, we should not smoke, two, we should stay at a healthy weight, which creates a positive effect by reducing oxidative stress substances from our body, three, we should have a healthy and balanced diet, especially we should stay away from processed foods and eat a carbohydrate-less diet, four and the most difficult one is to try to remove stress from our lives as much as possible.