Why doesn’t Apple Watch Series 10 automatically detect my workouts?

I was a previous Fitbit user and bought an Apple Watch series 10 thinking it would be more intuitive and advanced and to especially sync with all my apple devices. I am disappointed to learn that not only it doesn’t automatically identify workouts (yes i have followed all advice that has been shared - toggling the Watch settings on the iphone & putting in goals ) and I am also unable to backtrack record a missed workout like a Fitbit would. Surely, that is not right seeing Apple supposedly have better tech? Am I missing something?

[Re-Titled by Moderator]