You can delete chat messages In Microsoft Teams after you've sent them, but you can only hide messages from other users.

Maybe you made a typo — or, worse, hit send on a regrettable “drunk text.” Google Messages users can now stop hangxiety before it starts thanks to a new — and long-awaited — feature that un-sends a ...

To delete a message on Signal from the mobile app, tap and hold your finger on it; on the desktop version, click the three dots next to it.