Hi littlegui
welcome to the Apple (user-to-user) Community!
re: "MacBook pro 14" stuck occasionally : takes 30s to finish spin rainbow wheel and then pop up the window,
at this point all other features including apps are stuck like this"
Wondering if you have plenty of memory / storage space in which your Mac can operate freely:
(Is a good idea to keep at least 50Gb free, for the tasks you want to perform.)
See used and available storage space on your Mac - Apple Support
_____________________
If space is not a problem:
Check whether you have installed any third-party (non-Apple) apps like virus, checkers, cleaners, ad-blockers and the like, also VPN and even browsers have been the cause of difficulties. If so, try turning off such apps (or uninstall using the uninstaller from the developer) and see if that makes a difference.
__________________________________
If third-party software is not a problem:
Activity monitor on your Mac is a handy way to see which apps are using all the energy
View energy consumption in Activity Monitor on Mac - Apple Support
and
If you wish, you could run Apple Diagnostics to test your Mac for hardware issues:
Use Apple Diagnostics to test your Mac - Apple Support
___________________________________________________
Re: "its really uncomfortable experience on apple product"
Your Mac is likely still under warranty:
One stop for technical support, Apple hardware service, and software support.
Call Apple Support at 1-800-APLCARE (or use the app)
AppleCare Products - Apple
All the best :-)
