Reddit Mass DM advertisement

I need help creating an advertisement for a product to post on Reddit via mass-Direct-Messages. My target audience is gamers, so I want to focus on platform-specific gaming communities to reach this demographic. The main goal of my advertisement is to increase product sales, not just build brand awareness or grow community engagement. The perfect freelancer for the job will have be able to scrape users by given subreddits and send out the daily minimum number of messages. Send more we will pay more. You will need to provide proof of before and after.