Key file missing in AppData\Roaming\Daedalus Mainnet\Secrets-1.0, how do I generate a key file using cardano-wallet binaries?

Key file is missing in AppData\Roaming\Daedalus Mainnet\Secrets-1.0 after creating a new wallet. How can I create the key file myself using the cardano-wallet binaries that are shipped together with Daedalus? If you are going to explain it please explain It step by step, because I have no idea how to use the binaries and I’ve already tried opening the cardano-cli.exe and cardano-address.exe, but they only opened for a split second.

The secret key file is no longer created or used, it was an artifact of codebase approximately a year ago.

Then why the \AppData\Roaming\Daedalus Mainnet\Secrets-1.0 folder is generated a year later? Also what are the SQLite files used for in \Roaming\Daedalus Mainnet\wallets?