Angular cheilitis

I’ve had this for a long time. Like over a year now. Before that it’s been off and on for a couple years, so it’s now scarred as well. How can I get rid of this?!?!

I’ve tried Vaseline and chapstick. Neosporin. Alcohol. Peroxide. But it’s still there. Anytime I open my mouth, it still cracks and even bleeds sometimes. It peels and looks disgusting. I’ve seen a doctor and they just told me to use Vaseline before I eat. I’m guessing salty foods irritate it more. It looks nasty. 😭