Hi a-o,
The first rule of fight club appears to be, don’t talk about fight club.
Last I checked, F-Droid does have BTC wallets but I cannot vouch for any yet. Its an area I’m very interested in, the reading and research involved is large. If electrum is a wallet that uses a twelve word seed then I think I remember seeing one on here, yes. You’ll need to find it. I think bitcoin.org have a list of recommended wallets too.
Good luck!