@Anonymousunfortunately PowerApps does not really provide this scenario you are looking for.
PowerApps will work very well when dealing with Excel as a DataSource, but you are looking for more of a creation of a document with specific features.
There is a connector for PowerApps that will help you produce Excel and other types of documents. The connector is Plumsail Documents.
I could envision creating an Excel template with the components (charts, graphs, etc) you want and having the connector fill in the data for you.
Of course...if that is all you need, you can do this today directly in Excel by connecting your Excel to external data sources.
Either way could get you where you want, but PowerApps, by itself, will not provide it.