Hi Sweetbearies,
Thanks for reaching out to Apple Support Communities.
It sounds like you're having an issue with sending audio messages.
We're happy to assist.
We recommend checking out the steps in the section titled "Send an audio message" from the article here: Send and receive photos, videos, and audio messages on iPod touch
1. In a conversation, touch and hold
to record an audio message.
2. Tap
to listen to your message before you send it.
3. Tap
to send the message or
to cancel.
Note: To save space, iPod touch automatically deletes audio messages two minutes after you listen to them, unless you tap Keep. To always keep audio messages, go to Settings
> Messages > Expire (below Audio Messages), then tap Never.
We recommend the steps above because they directly address the issue you initially posted about: you're having difficulty sending an audio message on your iPhone.
Please let us know the outcome after giving the above steps a try.
Cheers!