How do you remove a third party application tried to change your search provider?

To remove a third-party application that has tried to change your search provider, first, go to your browser's settings and navigate to the search engine or privacy section to restore your preferred search provider. Then, check for any suspicious extensions or add-ons in your browser and uninstall them. Additionally, run a malware scan using an updated antivirus program to detect and remove any potentially harmful software. Finally, consider resetting your browser settings to their default state to eliminate any remaining changes.