I am unable to start a trial version of Power Apps in order to submit an application for an upgraded Microsoft 365 License for my work account. Please let me know how I can accomplish this task.

I am unable to start a trial version of Power Apps in order to submit an application for an upgraded Microsoft 365 License for my work account. Please let me know how I can accomplish this task.
You need to contact your M365 global administrators. If you can't start a trial using your M365 user email then your global admins have blocked trial licenses in your tenant.