Your requirements could not be resolved to an installable set of packages. Problem 1 - jenssegers/mongodb[v3.8.0, ..., v3.8.2] code example

Example: - Installation request for jenssegers/mongodb ^3.6 -> satisfiable by jenssegers/mongodb[v3.6.0, v3.6.1, v3.6.2, v3.6.3, v3.6.4]. - Conclusion: don't install laravel/framework v7.22.4

composer require jenssegers/mongodb:dev-develop
or 
downgrade laravel version to 6 version range