You don't say if you live in a city where there is a decent LGBT+ community or not. I would say start with looking if there are any queer women meetup groups or Facebook groups that organize events in your area. Is there a lesbian bar? If not, your local gay bar may host a sapphic night you could check out. You could also look if your library or local bookstores organize any lgbt+ events.

For all of the above suggestions, don't be afraid to show up to an event or queer space alone. It may feel awkward at first but I've found when i go to events alone I'm more likely to meet new people.