Is it possible to use the Maps here on Android? and how?

I tried downloading some to my MacBook by subscribing to them. They appear in the game on the Mac, but I can't find where they are stored on the computer. I searched for one's name and nothing came up. So it looks like you can't simply download them then email them to yourself. Any other ways?

I have loads of maps from Discord but I see many in Steam that I haven't seen before. Googling them only brings up their Steam pages.