How can I have a discussion with random people in the internet using the other account (to fake it)

I'm currently writing a story and I want to refer to the comments of redditors about something related to my story so I made another account to comment on a random post and have a discussion with random people. How can I do that?<br><br>I've been checking random posts and replying to them but I don't know how to start a discussion since I have to comment to reply to a comment. How can I do that?<br><br>I want to make it realistic.