App hangs on actual hardware but not Android Studio

Question

The app in question that my team and I created is here: https://codeberg.org/fbushstone/BasicFitness

When running the app on Android Studio's emulator, the runs normally with all the features we added. However, when attempting to run the app on an actual Android phone (Pixel 6a), the app hangs on the logo that Android shows when apps first run (i.e. we never make it past the initial loading screen of the featuring the clipart of the bicep).

Uninstalling and reinstalling does not fix the issue, and neither does rebuilding. Additionally, I tried signing the app. While that solved some problems, including allowing the app to actually install, the app can no longer proceed with execution. I was expecting the app to boot straight into the Workouts fragment.