I need social media ad expert.

Hi I need social media ad expert. I'm launching two websites this week that offer different types of personalized print on demand products. I'd like to get help from someone who can create high converting ads (graphic design/copy) as well as effectively target and manage the ads (with a great ROAS) on social media platforms for both websites. At this point I'm looking for someone who will be working hourly, not a freelancer who requires a monthly retainer fee or other arrangement