Please tell me some home care methods.

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

I used ointment, but I kept applying it and developed 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.

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.

Would it be possible with home care?