If you have to use passkeys, try KeePassXC and KeePassXC-Browser. I used them to set one up for Amazon a few days ago, as Amazon now forces passkeys as of this month, at least for my account. It was relatively painless.

That said, I don't like passkeys either.

This is the direction I'm looking, but it sounds like we might have a little farther to go before it works well across all devices.