Sports Apparel company (ladies clothes) looking to get on to Sports Clothes Platforms in Europe & UK

We have a small start-up clothes company (Hardface Sports). I am looking for a freelancer to make a list of say 25 Online Sports Clothing Companies that work with brands. The freelancer needs to contact the platform and introduce Hardface Sports and see if we can get on their platform. For example this Website (sells ladies golf clothes from many brands) so this would be a typical company to approach. Our Sports are Golf, Tennis & Padel & Pickleball.