Can I do home care for acne-prone skin?

What should I do about skin like this?

I'm seriously at a loss.

My skin used to be completely free of acne, but it suddenly turned out like that and hasn't gone away for years.

I used ointment, but I kept applying it and developed a resistance, so it got worse. I even went to a dermatologist, but it comes back a few months after treatment. I don't know if I have oily or dry skin, and I'm not sure if it's acne or inflammation.

Of course, since I took the photo in a dark place with the flash on, it looks especially severe and red.

Please let me know about easy skincare routines or routines for home care, or any recommended products you've personally tried and seen results from.

I want to go back to my old skin without acne. Is it possible with home care?