Bunch of problems with screen recorder

First of there always no sound whenever I screen record an app on iPhone for some reason , even when my microphone setting is on in the screen recorder but the video will save for some reason if it’s short. But if I have a long recording it always says “screen recording failed to save due to asset writer failing to save”

im fine with atleast doing a short recording or recording in general if there’s atleast audio , if it has to do with my storage , but the thing is I have enough storage so I don’t know why it’s doing this and I know I have enough storage because it still saves the recording with audio , does anyone know a fix to this?