[Question] Regarding the effectiveness of acne treatment, will red marks and pitted scars improve?

hello.

I am an office worker suffering from persistent pustular acne and its scars that have followed me since my school days.

Now, I am so stressed every time I look in the mirror that I am seriously considering getting a dermatological procedure.

Since searching online reveals nothing but promotional posts, I am posting this to find honest reviews from people who have actually paid for and experienced the effects of acne treatments. My main questions are as follows:

Improvement of marks and scars After the procedure, will the redness simply fade? Or can I also expect the skin texture itself to become smoother, especially if it is indented or bumpy?

Cumulative effect: I am wondering if the improvement effect accumulates noticeably with each subsequent session, rather than through short-term management of 1-2 sessions.

Actual perceived change After the procedure, do you notice the effects when washing your face or applying makeup?

Rather than simply saying that it 'gets better,' it would be a great help in deciding on the procedure if you could share specific experiences regarding the process of how your skin changed.
I look forward to your valuable reply. Thank you!