Hey, StarryAri!

You're definitely welcome to get some one-on-ones going in the
General Roleplay Areas. You don't have to have a grand idea made for a big collection of players to get something going there. For one-on-one or small group ideas that start to develop into collections of threads falling under one overarching storyline or setting, we have
Special Roleplay Areas (also for ideas like Mystery Theater, that are intended to start as group games that need to have a forum to themselves).
For either a one-on-one thread/plot or a bigger, group RP, you can get some plotting done
here. This forum is for plotting
and interest checks, for those people who want to propose an idea and gauge the level of interest to see if it's worth pursuing or how the idea should be developed.
Let us know if you have any more questions!