Unable to send photos, videos, and voice messages periodically in Messages

i can’t send photos or videos or voice messages randomly and the remedy has been to just restart my phone and it works it randomly stops working again, verzion has no answer, they’ve troubleshoot everything and it’s a temporary fix and it happens again. It works on and off even when I’m home on WiFi it happens, I can cut my cellular data off and it’ll still happen somebody please let me know where should I go, also it’s a new phone maybe 3 months old and it’s been happening since I got the phone, went to Apple and got a diagnostic and they said the device is free from hardware issues

[Re-Titled by Moderator]

Original Title: Photos, videos and voice messages won’t go through periodically no solution