1. Consider using other third-party apps: compare features, decide what's best for you and make sure they're compatible with your device.
2. Uninstall any tentacle apps that came pre-installed on your device.
3. Research the best-rated apps that suit your needs and download them from the App store or Play store.
4. Open the newly-installed app and you should have the option to set it as your default app. Select this option.
5. Your default app will now be changed and ready to use.