PRP at the present moment is not available in Singapore. It does help with acne scarring though, and you might have to go to neighbouring countries to do the treatment (including Malaysia).
Having said that, you can consider Rejuran/skin boosters/microneedling that can help in a similar fashion.
Your 2nd question on which is better — it depends on the severity and type of scars. But usually Fractional laser is the backbone of laser therapy. So consult your doctor early to discuss the available options.