When you double-click a file in the file manager, it will be opened with the default application for that file type. You can open it in a different application, search online for applications, or set the default application for all files of the same type.
To open a file with an application other than the default, right-click
the file and select the application you want from the top of the menu. If
you don't see the application you want, click
If you still can't find the application you want, you can search for
more applications by clicking
You can change the default application that is used to open files of a given type. This will allow you to open your preferred application when you double-click to open a file. For example, you might want your favorite music player to open when you double-click an MP3 file.
Select a file of the type whose default application you want to change.
For example, to change which application is used to open MP3 files,
select a
Right-click the file and select
Select the
Select the application you want and click
If
This changes the default application not just for the selected file, but for all files with the same type.