To resolve the issue of your bank app consistently closing when you try to open it, follow these actionable steps:

1. Force Stop the App:
- Go to Settings on your Android device.
- Navigate to Apps or Applications.
- Find your bank app in the list and tap on it.
- Select Force Stop. This can clear temporary glitches that might be causing the app to crash.

2. Clear App Cache and Data:
- Open Settings again.
- Go back to Apps and locate your bank app.
- Tap on Storage.
- Select Clear Cache and then Clear Data. Be aware that clearing data might delete any saved login information or preferences, so ensure you remember your login details before proceeding.

3. Check for App Updates:
- Open the Google Play Store.
- Search for your bank app.
- If there is an update available, tap Update. Developers often release updates to fix known bugs that could be causing crashes.

4. Check Device Software Updates:
- Go to Settings and scroll down to System or About Phone.
- Tap on Software Update and check if any updates are available. If so, install them as they can improve app compatibility.

5. Reinstall the App:
- If the app continues to crash after updating, uninstall it by going to Settings > Apps > [Your Bank App] > Uninstall.
- After uninstalling, restart your device.
- Reinstall the app from the Google Play Store and check if the issue persists.

6. Reset WebView (if applicable):
- Android System WebView may cause issues for some apps.
- Go to Settings > Apps and search for Android System WebView.
- Tap on it, select Storage, and clear its cache and data.

7. Operating System Issues:
- If problems continue after trying these steps, it might be worthwhile to perform a factory reset as a last resort. Before doing this, ensure you backup your important data, as this will erase all data on your device.

8. Contact Support:
- If none of these steps work, contact your bank’s customer support with details of the issue for assistance or check if they have reported any ongoing technical problems with their app.

Following these steps should help you troubleshoot the problem effectively. For further assistance or similar experiences, you can check discussions related to app crashing issues within the Google Community or Reddit - learn more - learn more - learn more.