Zorin 15.3 Random Freeze what log do I need to read?

Zorin 15.3 Random Freeze installed dual boot with Windows 10 Version 20HD (Latest Win Update) Installed on a Lenovo G570 Laptop with 8 gig RAM.
Where would I find a log report of what went wrong or caused it to freeze? What log do I need to read and file location please??

Zorin XFCE or Zorin Gnome?
Do you use Chrome?

What graphics card are you using?

As far as logs, you can look in your home directory for .xsession-errors
The next directories to check are /var/crash and /var/log/xorg.0.log