Figma is forced to always use the latest version because it is a web-based, not a local application.

But, there is an official link where older versions are available in case of older OS, you can try it:

• https://desktop.figma.com/mac/Figma-125.4.9.zip 
• https://desktop.figma.com/win/build/Figma-125.4.9.exe

You need to replace the final piece (125.4.9 → 124.0.2, eg.) of the link to match the version you're looking for.