If you are facing that several apps are not working on your device or keep crashing, then you can try the given below steps to resolve your problem:-

1. Restart or Reboot your device

2. Reinstall the app that crashed

3. Connect to a stable and reliable internet connection

4. Update the app that crashes

5. Free up as much storage as you can

Source: https://getassist.net/apps-keep-crashing-on-android/