You're looking for a review related to jailbreaking iOS 12.5.7 on a Windows machine. Here are a few:

Reviews:

Freya: A newer alternative often used when other methods fail, supporting many legacy 64-bit devices. Method 1: Using Chimera via 3uTools (Windows)

The Process:

Chimera IPA file, which you can download from the official Chimera website. Step-by-Step Instructions