What happens when.....

[Orangeman13]

I close my MBP 2021 14 inch while its on? Does it automatically go to sleep?

 

[DeltaMac]

When you close the lid, your MBPro sleeps - right now! 😎
Nothing automatic about that, when you manually put it to sleep by closing the lid.

 

[jav6454]

I close my MBP 2021 14 inch while its on? Does it automatically go to sleep?

Enters sleep mode.

 

[TinyMito]

Unless you have an external monitor connected to it. It will rewake displayed on the desktop.