I'm guessing you're looking for more to have a real life RP group than an online RP? Short of mind control, I think your options are to either
1 - Find other people.
2 - Summer tends to be lull season for RPs. The people you asked before that said they don't want to play, may have meant they don't want to play right now instead of not wanting to play at all. You need to know which of the two it is.
Ask not the Eldar a question, for they will give you three answers; all of which are true and horrifying to know.