Must be USA-Based. Help me with posting content, fixed fee + potentially revenue share

I'm a developer based in Singapore. Looking for someone in the USA to help me post pre-made short form videos onto TikTok & Instagram. Content are going to be within the health & fitness niche. NO Filming/Editing required... (Budget: $30 - $250 SGD, Jobs: Facebook Marketing, Instagram, Social Media Management, Social Media Marketing, TikTok)