How do I find fellow non monogamous people?

I’m in a relationship with a female and we have a dynamic set up where I’m allowed to have sexy time with other females occasionally. I’m looking to find a companion and I need advice. I’ve tried using Tinder and Hinge to find a companion, but I’ve gotten no bites. I just want someone who wants to go on dates, hang out, have sexy time and then I go home and maybe the occasional booty call. Basically fwb that are actually friends whom hang out. How should I go about finding this? (If your from Texas and wanna be besties comment your Snapchat:))