WhatsApp, Instagram and Facebook Messenger meet falls worldwide from a few minutes, as we can see in Downdetector. At this time, we cannot do anything in these applications beyond the things we have already loaded or cached.
That means that neither WhatsApp voice notes nor sending text messages and attachments work right now, so it is not a partial fall but a complete one.
The advice is to keep calm and do nothing if you need to contact in any way through the Facebook applications, because perhaps afterwards you will not be able to enter again for a while. As alternatives to contact, the ideal is to use Telegram, iMessage or Signal.