Even after shaving, the hair grows back dark in two days, and I even get folliculitis. How many laser hair removal sessions do I need for my calves?

I've been shaving my legs continuously, but dark stubble starts growing back after just two days, and the hair follicles become bumpy and red, so I'm looking into laser hair removal. I heard that winter is a good time for hair removal, so I'm thinking of starting this time.

After looking through reviews, I found that many people mentioned these things as advantages of Clarity 2.

① Since cooling gas is released along with the sensation, it feels only slightly stinging and warm, so it is often received without anesthesia.

② The ability to use wavelengths suitable for both thick and fine hair.

③ There were many reviews stating that breakouts definitely decreased in the armpits starting from the 3rd or 4th session, and in the legs from around the 5th session.

However, I’ve heard that some people developed folliculitis after the first or second session, and that hair seemed to grow back around the third session but then cleared up as more sessions accumulated.

I have a question to ask.

① Based on the calves, how many sessions and at what intervals are usually received?

② When should I shave before the procedure?

③ If you are prone to folliculitis, is there any specific management or prescription required?

The photo is a reference picture that has a similar vibe to my concerns. Please reply!