To download what is commonly referred to as , you are actually looking for the 32-bit (x86) version of Windows 10. There is no "86-bit" architecture; the name "x86" refers to the family of processors (like the 80386 and 80486) that first used this 32-bit instruction set. How to Download Windows 10 32-bit (x86) ISO

The safest and most reliable way to obtain this version is directly through the Official Windows 10 Download Page using the Media Creation Tool. Download Windows 10 Disc Image (ISO File) - Microsoft