One of the tenets of using a monorepo is that the apps and the libraries share the same version. This simplifies the usage and maintenance of the projects. In your case, using a monorepo/workspace may not be a good option.
My team has found that all of apps using the same versioned libraries has simplified our developer workflow. We no longer have to build and publish libraries and manage different version in different applications.
There are many other benefits of a monorepo — however, there are considerations that may not work with all development teams/environments. Would you be able to share the motivation and/or use case for needing to manage different versions?