If your CPU supports virtualization and you’re running Win10 Pro or Enterprise, Microsoft already has a built-in sandbox you can use. No need to go with 3rd-party software as long as you just want to use it as a secure test environment.
If you want to keep snapshots of your sandboxed installs, or have additional features available to use, then Sandboxie Plus is a good alternative.
Just the same, I have Sandboxie Plus installed on the sole remaining Windows Pro PC in our home purely for its convenience and feature set and it works just fine for us.