Firefox is handy if you want to occasionally do personal stuff on a work-provided Windows PC, since it has it's own proxy settings (where Chrome uses the Windows settings). Also DNS-over-https. So if you run a proxy on an outside host, it's all still reasonably separated.

I suppose you could wrap it with Windows sandbox[1] if you're paranoid.

[1] https://docs.microsoft.com/en-us/windows/security/threat-pro...