Maybe look into Qubes OS? I've never used it, but the concept sounds kinda like what you're describing: "a security-focused desktop operating system that aims t

Maybe look into Qubes OS? I've never used it, but the concept sounds kinda like what you're describing: "a security-focused desktop operating system that aims to provide security through isolation. Virtualization is performed by Xen, and user environments can be based on Fedora, Debian, Whonix, and Microsoft Windows, among other operating systems." (from Wikipedia)