Has everything been hacked?

I suspected that everything was hacked on me. My Google account is crazy, my Minecraft account has been deleted and someone is constantly texting my Discord account when I'm writing messages with them.

In addition, things were simply ordered from my mother from her Amazon account.

Is there anything you can do?

Change Amazon account data and clean hard drive

Change all passwords (also of the e-mail accounts!) And above all use secure passwords and always different ones!