Mainstream Linux Mint discontinued 32-bit support after . If you specifically need a 32-bit version, your primary options are:
LMDE 7 "Gigi" currently supports 32-bit architecture. Status: Active and supported with security updates. Linux Mint 32-bit Iso File Download
This is the only modern Mint edition that still officially provides a 32-bit ISO. Mainstream Linux Mint discontinued 32-bit support after
You can find these files on the official Linux Mint "All Versions" page. Once you select a version, look for the under the download mirrors section. Download Source LMDE 7 Modern 32-bit Official LMDE Download Mint 19.3 Cinnamon Legacy 32-bit Riken Mirror (Archive) Mint 19.3 MATE Legacy 32-bit MirrorService (Archive) Mint 19.3 XFCE Legacy 32-bit Internet Archive System Requirements for 32-bit Mint Linux Mint 32-bit Iso File Download