Does running on roads have bad affect on knees?

It could. Trauma from running on a hard surface could damage knee and ankle joints. It is good that you exercise, but it would be better to run on softer surface. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV, Flu and Covid vaccines.

Hard surfaces put to much tension on knees ,try running on dirt roads or on grass .Tennis players like to play on clay or grass especially as they get older. Paved roads have no cushion to protect your knees but dirt or grass have a softer surface.