Reset startup disk to default
Hello, so everytime I reset my computer, it always goes into Windows, even when I’m on macOS. It’s because I accidentally set Windows as the startup disk. I want to be able to undo that so that when I switch to macOS, it will restart to macOS, and when I switch to Windows, it will switch to Windows like it did before I messed with the startup disk settings. How do I change the startup disk settings back to default?
MacBook Pro