Create a new account to do so, interact in a way to spur aggression from other users (lying in comments you can't read, being aggressive to supporters of your content, etc.), using the info you post in an attempt to dox you or otherwise stalk you, screenshot everything you post and send it to a discord that's made to harass people like you, an quite a few more.

You'de be surprised how quietly never seeing a person again stops this interaction, but just no longer engaging won't as the person will be constantly reminded of your existance. Simply disengaging while they still see your posts will quite often make then get more violent or direct in order to get a responce fron you. I've seen this before from kiwifarm members.

A real block feature may not stop all harrassment as they can still create a new account, but it's less likely to prompt it's continuation as the other user simply sees a quiet end to your existence.