What can help regenerate acne-prone skin?

Both my teenage girl and boy have severe acne. I don't know how they both ended up like this...

The older one's (girl's) face is especially ruined. It's reddish.

On top of that, the second one is getting worse as well.

 

I had a lot of acne, and it kept falling off while I was washing my face.

I also squeeze it by hand...

They also use tools.

ㅠㅠ It turned red and left scars, and I guess there was nothing I could do about it.

 

I was wondering what is needed for regenerating acne-prone skin like that.

Products, cosmetics, or even things to eat that are good for acne-prone skin regeneration, etc.

If you know of anything, please share it.

 

Skin regeneration ointment is good, and skin regeneration cream is good too.

I am looking for a regenerating cream that helps manage acne scars.