What are some cost-effective treatments for acne?

I've suddenly been getting frequent breakouts, so I'm looking into dermatological treatments. I used to get one or two occasionally before, but recently they've been appearing repeatedly on my forehead. Just when they seem to be going away, they pop up again, which is really stressing me out. Red marks are also left where the acne has subsided, so my skin doesn't look clear overall.

I’ve been looking into visiting a dermatologist, and I’m having trouble deciding which treatment to get because there are more types of acne procedures than I expected and the prices vary widely. I’ve also heard that consistent care is necessary rather than just a one-time treatment, so I’m looking for a method that I can continue receiving treatments on a regular basis without being too expensive. However, I want to avoid treatments that are cheap but ineffective.

I am wondering if there is a treatment that helps reduce current breakouts while also managing acne scars and skin texture. If I need multiple sessions, I would like to know how many are generally appropriate, and I would appreciate recommendations on which treatment would be best to try first in terms of cost-effectiveness.