Fraxel CO2 laser or Morpheus8 - which treatment would best address my deep acne scars? (photo)

I have deep acne scars. I have spent a lot of money trying to get rid of them but they are still so deep. They are a result of my 6 back surgeries and the medications I have taken. I am desperately trying to find the best treatment to get rid of them. Is Morpheus8 or Fraxel CO2 laser the best option for me? Do you recommend something else? I have done Morpheus8 twice already but i don't see much a change. Thank you for your time.