I find the default grid view that shows all your apps in watchOS 7 to be too cluttered. If you go, you can change it to the list view, in which apps are always arranged in alphabetical order. Here’s how:
On your Apple Watch, press the Digital Crown to go to the Home Screen.
If the screen is in list view, open the Settings app on your Apple Watch, tap App View, then tap Grid View.Press the Digital Crown when you’re done.
Or open the Apple Watch app on your iPhone, tap My Watch, tap App View, then tap Arrangement. Touch and hold an app icon, then drag it to a new location.