There are roleplay subs of all kinds on Reddit. (Or at least, there were. Idk how it's now.) But women are in the minority on most of them, so it's quite a process to be "interesting enough" to get an audience.
I have a theory that a ton of the women that would have at one time been into random sexting realized they could make money off of it. Now they end up being OnlyFans girls and charging for everything. Not to say it’s impossible to find someone but I think this has contributed to the rise of people asking to be deliberately catfished and AI chat bots taking off so well. Just the age we live in.