What could be the cause of my suddenly worsening adult skin problems?

Acne, which didn't appear even during my school days, suddenly started appearing as an adult.

My skin troubles didn't seem to be getting any better, so I tried changing cosmetics, but it didn't work.

Has anyone ever received treatments like anti-inflammatory injections or scaling for adult skin problems?

I'm curious about what kind of treatment is fundamentally effective in preventing skin problems.

I feel bad every day when I look in the mirror. Could you please give me some advice that will help me?