Apple Watch Series 7 battery life not lasting very long.

series 7 June 30th but I’ve only worn it last two days, 4th and 5th of July 2022!

Didn't keep charge yesterday 4th, was flat after 6 hrs even though I had it on power save in work.

I’ve reinstalled it this morning and didn’t click all the apps option… but it was down to 10% 7pm tonight 5th July without me touching it as I was in work.

is not fit for purpose!

[Re-Titled by Moderator]