Paid collaborations rarely come from one site. They come from being easy to find and then pitching. List yourself where US brands search for creators, like the KALO IQ database, so paid offers come to you. Then pitch ten brands you already buy from with one clear result. The marketplaces help but the paid work goes to creators a brand can find and verify fast.
How paid work actually shows up
Two channels feed each other: brands finding you and you pitching brands.
Be findable first
Get into databases brands search, with your niche and real engagement on show.
Pitch with proof
Ten warm pitches with one result each beat a hundred cold ones.
Filter the free stuff
Reply to gifting only when it leads somewhere. Free product is not a strategy.