The answer really depends on your needs and use cases, as well as your risk profile.

The simplest option is to schedule regular backups to a USB (preferably rotating drives, following the 3-2-1 rule). If “shit happens”, you would restore that backup using the same software. You may have difficulties restoring to different hardware. Acronis and Macrium are simple solutions here, or Clonezilla if you prefer free or offline backups.

If you want a way to boot to a diagnostic tool, and recover from there, there are countless options. From a live Linux distro, UBCD, WinRE, Media Creation Tool, the options abound. You may or may not be able to recover any data, or your existing system. It really depends on your definition of “shit happens”, and what you need it to do.

I suspect that your real goal is to move your existing Windows install (and all associated data) to a USB drive, and boot from that. Windows to Go was exactly that, but was discontinued. There are some hobby projects to do the same. This is (usually) a really bad idea. USB drives are much slower and less reliable, and create extra points of failure. It also keeps almost all of the other risks of the internal drive. You’re better off using option #1 above.