I am first day using Power Apps, and trying to do this simple thing.. with a Power Apps as below"

What I want to achieve is this:
Users will select their inputs (Country, Date, Total Scope1,2,3 Emissions), and press the Save button. Upon each Save button pressed, I want all the above input information to be saved in an Excel file (appended mode or overwrite mode) in a column format, that is Column 1 = Country, Column 2 = Date, Column 3 = Total Scope 1 Emissions, Column 4 = Total Scope 2 Emissions, Column 5 = Total Scope 3 Emissions.
I read from https://www.youtube.com/watch?v=tQCBWMR7T64 it is possible for Tabular data, but I am not sure how do I manipulate it for inputs entered by users from the UI.
If that is possible, the next thing I wish to do is to save those information in Azure Blob Storage or Azure SQL Database, which would be more difficult.
Appreciate it very much.