yeah, that's why i use brave's password manager and physical tokens, yubikeys, and i have a mini pc that handles my high value bitcoin stuff sitting behind me on the shelf
brave's password manager does use internet but it doesn't store stuff on other computers, the devices sync to each other using a tunnel that brave's servers let you create, it's a whole world different from what bitwarden does, and i trust brave a lot more than some company that influencoors are pimping to me
my recommendation is use brave sync, and get yubikeys and make physical backups and paper keys