Yes, I know what you want.
I'd want the same thing, and as I said I used to use Sandboxie, and before that Proxomitron.
But developers don't seem to want to make really useful software for web browsing, barring certain add-ons.
Of course they'll be happy to sell you an overpriced antivirus that may have side effects even worse than a virus.
If you want an actual sandbox, you have to use something heavyweight and slow, like a VM.
Something that is 80 times more than you need, and does a really poor, slow job of things.
I don't need to test software,
Very few people need to test software.
VM's aren't just made for testing software, and aren't even that good for it -- especially if the software needs something like video card capabilities or some other hardware capability. Virtual video cards in VMs are pretty bad.
They do separate potentially infected stuff inside the VM from the computer's main operating system.
However some malware is "VM-aware" and behaves itself when inside a VM, so you can't really test whether it would behave like malware outside the VM or not.
just be able to google without picking up the virus of death.
That can happen whether you use sandboxie or similar anyway.
Worse than a virus is malware that steals your information.
Credit card number stolen? That's nothing. $50 tops.
What you have to worry about are the 800 new credit card accounts made in your name using your information, and each one charged to the max. That will take years to sort out, and may follow you around for the rest of your life.
I don't think using something like Sandboxie helps with "safety" as much as it used to.
Too many new strategies for thieves, who can easily work around browser sandboxing.
One thing you can try is to boot off a Linux DVD instead of your hard drive, then do your browsing with that. Firefox on Linux works the same way as Firefox on Windows. Or you can use Chrome, Chromium, or Opera browser if you prefer.
Browsing from a DVD is slow because it has to get its info off an optical drive, and those tend to be slow.
A burned DVD will not get infected once sessions are closed.
But you're not apt to pick up a Windows virus.
There is software that automatically saves the contents on your hard drive before you do anything with the computer.
Some schools use this kind of thing, because students tend to browse where they catch viruses using the school computers. It's faster for the school's IT department to just assume the students will catch viruses and automatically restore the computers' hard drives to a known clean state every time the school computers are started up in the morning. It may take the computers over an hour to boot because so much restoring has to be done.
I'm sorry what you want does not seem to exist. It doesn't exist for me either.
Check out the ReHIPS or one of the programs at Draclvr's link at
https://blogs.systweak.com/best-sandboxing-software-for-windows-10-8-7/like "Shade Sandbox."