@UPA ARAGON
You could set unique permissions for some folders, then employees can access these folders but cannot access all data in the OneDrive.
Select the folder -> Click three dots -> Manage access -> Through Direct access to set unique permissions for the folder. After setting unique permissions for the folder, users with licenses cannot access.
In the Direct access -> Advanced -> Stop Inheriting Permissions -> Grant permissions and remove needless permissions.
Reference:
https://support.microsoft.com/en-us/office/sharing-sharepoint-folder-items-with-unique-permissions-01e5e32a-a2c5-4d84-ab4c-637f5f642935
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