I'm curious about the toning laser treatment cycle!

I have many questions before receiving the toning laser treatment, so I am asking this question.

I am looking into toning lasers because my skin tone is generally dull and I am concerned about blemishes and light freckles.
In particular, I have pigmentation in some areas of my face and my skin tends to be sensitive, so I am worried about redness, dryness, or breakouts after the procedure.
If this is my first time receiving toning laser treatment, I am wondering how many sessions are usually required to feel the effects of improving skin tone or reducing blemishes.
I would like to know if the effects appear immediately after a single treatment, or if consistent sessions are required. I am also curious if the laser intensity or number of sessions is adjusted differently depending on the skin condition.
I have heard that I need to apply sunscreen thoroughly and moisturize well after the procedure. I would also appreciate it if you could let me know about precautions I should take in daily life, such as washing my face, applying makeup, exercising, and drinking alcohol.
I am also wondering if there are cases where pigmentation actually darkens or the skin becomes more sensitive after receiving toning laser treatment.
I would like to consult on whether a toning laser is suitable for my current skin condition and whether it would be beneficial to combine it with other pigmentation treatments.