I update system and VMware Workstation not working anymore in Pop!_OS 21.10. Worked fine before update.
Before you can run VMware, several modules must be compiled and loaded into the running kernel.
I've repeatedly ran into this issue under Ubuntu (multiple versions).
I've been able to successfully compile these modules using mkubeck's host module patches (located at https://github.com/mkubecek/vmware-host-modules).
Hope this solution works for you!