Adult acne, milia, flat warts

Some things that appear on the face are adult acne, while others are called milia or flat warts, but it's hard to tell just by looking at them. Especially when I tried to pop a pimple, thinking it was a whitehead, I thought sebum would come out, but nothing came out and all I got was a scar.

I feel like the stress just builds up because the marks don't go away even after a few days. Adult acne and other skin conditions that didn't exist in my 20s have started to appear since I turned 30, so I wonder if it's because my skin balance isn't working properly, or if it's aging... Also, my skin seems to be deteriorating into a combination skin type. It's drier on the inside, and my skin is shiny on the outside, but it's oily and prone to breakouts.

How should I manage adult acne, seborrheic keratosis, and flat warts?

And is there a specific treatment that is suitable for combination skin that is getting worse and worse?

I would appreciate it if you could let me know!!! 🥺