Improve dental hygiene. Don't brush your gums too hard.

Other than that, not much you can do. Mine improved slightly once started practicing better oral care.

Softer toothbrush. Brush thoroughly, especially gums, and gargle with mouth wash twice a day.

Eat less sweet stuff and junk/snacks.

Honestly doesn't really matter the brand, according to few dentists I've spoken to. It's like better to shower with soap, than with just water. Any soap will do.

Not brush the gums, but the part where the gums meet the teeth.
Plaque build up there will affect gum health, and dentist told me many do not brush properly enough at that area. Hence you get gums receding, bleeding etc.

Recommended brushing time should be 1.5-2 minutes. If you're brushing less than that, you aren't brushing enough or properly.