There is a good amount of people that do group roleplays here. Just looking at the numbers of interest check threads, 1x1s and Casual (one of the most active section) are pretty close in numbers and that doesn't take in consideration of the other sections. The best thing to do to find a roleplay is figure out what section(s) would fit your needs and browse through the interest checks for a roleplay. If you feel gutsy enough,you can even start up your own!

I hope you enjoy your stay here and that your search will turn out successful!