what is network id / subnetmask / ip address (192.168.0.0) / ip address (234.54.143.22) eg.

I'm new at networking and there's a lot that i can't understand, starting out with network id, i heard this word a lot but i can't understand it. what is network id? and for example when i type what is my ip address on google i get the same ip address on every machine in my network is that my network id?

and this really confuses me as i thought that every single computer in the world has its own unique ip address but it turns out that my laptop and my phone has the same ip address?

and what is that ip that comes like (192.168.0.0) what is it used for?

and wtf is subnet mask!!