Hello. I am new though I also need help
Heya there and welcome to RPol, you'll find anything you want here and so many great games from freeform to about any system game you like. I am one of those crazy people who only run freeform games but most GMs here will be glad to help you learn system games as well. Your choices are vast and varied.
There are no Chat rooms here but most games/stories have an OOC thread where the players of that game chat and have fun. I am so sorry you had a run in with a bad GM and Players. You will find most GM/DMs on here are welcoming and helpful to new players. There is plenty of games on here to join and in any genre' you like.
Most GMs only check those ad threads once a week or even less for some so you will get sadly missed. Either clicking on the game link or rmailing them is the best way to let them know you are interested. :)
A few tips for you are below:-
Make sure you turn on your rmail by going to the link at the top that is User preferences, there you will find some settings to play around with including the rmail one as that is how you and most GMs can talk.
On the main menu there are two forums you can find what you want to play in
Wanted: players At the top there is a link that is 'Search Games' and when you click on those words it gives you a more distinct search area for what you are looking for.
Wanted: GMs where you can make a post describing the type of games you are looking for and GMs check there for new players sometimes.
At the bottom of the main menu you will also find search link to find games and other good stuff.
So all I can say now is
HAPPY GAMING!!
LS