First thing you can do is conduct an all-encompassing research of your target audience’s needs and pain points, which are not fulfilled by other marketplaces. Also, make sure your platform has an advanced analytics feature that will help you analyze your customers’ behavior and later on improve their user experience.
And most importantly, create a marketplace app that is inclusive to all groups of people. For instance, you can add a feature of voice recognition and choose readable fonts so that the app is accessible to visually-impaired people.