How do I fix sleep tracking issues on Apple Watch

My watch is not tracking my sleep accurately. Last night I did not sleep at all due to stomach bug, watch recorded sleep cycle including REM etc. nothing about being awake 10pm to 7am. Both phone snd wstch up to date. I’ve reset schedule previously because I had suspected app not reporting accurately.

Anybody experiencing similar?

Got a solution!

Cheerd

[Re-Titled by Moderator]