I have devised a possible security method that could keep hackers out making it even more difficult for them to steal our bitcoins.
you better be careful saying things like that. plenty of people here will tell you that bitcoin is already secure enough. that you could walk around the earth for a billion years and never see the same bitcoin address's private key ever.
i think ultimately your idea is not going to gain any interest/traction simply due to the fact that people will just tell you to use a multisignature wallet setup. or better yet, see what you can do with taproot.
A difference from multiple signatures is that with this project you will be able to Hold without storing your "subwallet privatekey" nowhere, it will only store your "master private key" and even if it is violated, your funds will be safe because your "master passphrase" will be required to generate your" subwallet privatekey "