A person or entity promoting themselves or their services directly to the public without the involvement of intermediaries.

स्वयं प्रचारक

English Usage: She became a self advertiser by using social media to showcase her art.

Hindi Usage: उसने अपने कला को प्रदर्शित करने के लिए सोशल मीडिया का उपयोग करके स्वयं प्रचारक बन गई।