Meetup gets thrown around as cliche advice for this sort of things, but in the last city I lived, majority of meetups were either very demographic specific (i.e. something like 60+, or women’s business) or fronts for MLM and other scams.
It was less of an event and more of a community of acquaintances who were good at welcoming strangers. Many of us became good friends.
Space was public venues, and once folks got to knowledge other, other suggestions of who had access to space came up pretty easily.
Today, I’d probably pick something semi different like airmeet and use it for a virtual meetup to gauge interest.
Sometimes restaurants or libraries have dedicated rooms that can be booked.
They're usually not on meetup, and often only on their own websites and/or on Facebook.
I found this helpful: https://outline.com/aAmy53