The exact origin of this clip is not documented, but its life online is as a short reaction sound built around an unintentionally mangled self assessment. The phrase circulates because we're almost not good is clumsy in a way people recognise from real group chats and voice calls, where nobody wants to say the performance was simply bad. Short spoken clips like this spread through soundboards and edited videos, where they are reused as captions in audio form for failures that are funny rather than disastrous.