Chronic venous insufficiency

About five years ago, a vein appeared in my calf, so I went to the hospital and had an varicose vein test.

He said it wasn't that serious, and that the veins running horizontally are more severe than varicose veins... I can't remember exactly what it is, but he said it's worse. If my legs feel a bit swollen or sore, I wear compression stockings, but these days I just go about my usual routine.

Is it okay to leave it alone if there is no significant inconvenience in daily life?

There are times when I feel a heavy sensation in my legs.

What kind of exercises or stretching would be good for varicose veins and leg health?