I am Muhammad Junaid an experienced web developer and digital marketer, You can use the social media marketing, google ads on which you can make a video intro of your market place and start marketing through video or picture or any type of text post to engage the customers and get the desired results for your marketplace.
If you want to more discuss the issue you can just call me and discuss different web development platforms and also if you want to discuss the marketing strategy then i am here please just request a call and i will be here with you and will love help you with anything related to IT.

Thank you