Raised lumps on penis from friction?

If you mean: With masturbation, and you're doing it correctly, the answer is it shouldn't happen. If you're too aggressive and are approaching masturbation as mma, then i guess it's possible. Be gentle with your penis, it's the only one you'll ever have.

? Fordyce spots: Also known as pearly pink paplules and located around circumference just below glans corona (widest part of head of penis). These are normal & enlarge with friction, humidity or heat. Thus can become prominent after sex or masturbation. They are a normal finding & nothing to be worried about.

Lubricant: You may use a water based lubricant like K-Y Jelly for masturbation or sex. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV and Covid vaccines. Wish you good health!