Hi, welcome. The biggest question is are you looking for a game with a rules system or something free-form where you can just write and not worry about mechanics?
I imagine you're looking for free-form or light rules. I would encourage you to check the players wanted form and scan down for anything with the fantasy box checked. Or run a search.
At the bottom of the main page there is a button called Browse/Search Games. Click that then Put a check in fantasy and remove a check from any level of game you don't want (general, mature, adult). Make sure to leave the check for only active games looking for players and you can put free-form in the Game system box and hit search.
If you are looking for something with a system, I am running a Dungeons and Dragons 5e game you are welcome to fill out an application for.
link to another game