Awful pics using the flash in FZ150

The exif info are here..

This how IA mode took the pics..

I tried 100 and 200 ISO and but not 0.66EV as it was already too harsh when I tried in A P S mode.

I used also Spot and Center metering and not Multi Segment but the issue was the "light" not the focus imho. So maybe somebody can explain simply what is wrong.

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Ignorant photograph beginner