My worry is my university might have access to my devices in any way, I already posted about it and many gave me reassurance about it, but I decided to reinstall them anyway.

Phone and laptop, how to do that? About the laptop, below is what someone told me, so I want to be sure I don't have any of those tools left on my devices (if they're there at all lol)

"It's normal for school and business networks to install extra software that gives them more control over your device. These are usually called endpoint management clients.

Removing your school account from your device will not automatically remove the endpoint management client that they may have installed. If you're genuinely worried that your school may be snooping on you, you should also be worried about some of those snooping tools getting left behind on your computer once you remove your school account.

The only way to be completely sure their tools are gone is to reinstall Windows from a bootable USB that you made yourself. Then, never ever log in to Windows again with your school account. If you do, your computer will rejoin their network and automatically download their endpoint management client(s) again."