You only have the option to delete a text for everyone if both parties are using RCS messaging. To delete a sent message, long press on it until you see options at the top. Beside the edit button ...

Google Messages now has a delete for everyone option The feature is rolling out now to Android phone users It'll only work ...

Storing too many old texts can clutter Android's message app and slow performance. Learn how to clean up and improve your phone's speed.