If you cannot afford a license, consider these free, open-source virtualization tools:
Parallels transitioned to a subscription model several years ago. This was a strategic move that effectively killed the "lifetime key" market. You can no longer buy a version and use it forever without updates; the software is designed to phone home. Parallels Desktop 18 For Mac Activation Key Free
VMware now offers a "Personal Use" license for Fusion that is free for non-commercial users [5]. 4. Risks of "Free Keys" If you cannot afford a license, consider these