1 Go to System Preferences: Click on the Apple logo in the top-left corner of the screen and select "System Preferences."

2 Select "Dock & Menu Bar" or "Mission Control": Depending on your macOS version, the option may be labeled differently. Look for settings related to the Dock or Mission Control.

3 Check "Prefer opening in Full Screen": In the settings related to Dock or Mission Control, you should see an option to "Prefer opening in Full Screen." Enable this option for the desired application.