Need to post both your Make & Model of your Motherboard and Processor (Which you did already).
Once you post the Make & Model of your Motherboard and I might be able to post the link to your Motherboard's QVL List for RAM for the 3000 series processors.
With that list you can check all the 32GB RAM Sets listed. IF the QVL List is too outdated. Then go to the RAM Manufacturer Website to see which RAM is compatible with your Motherboard.
Here is AMD Ryzen 3000 series and newer RAM Memory compatibility Chart: https://www.amd.com/en/products/ryzen-compatible-memory/
NOTE: if you decide on a RAM Memory from any of the links make sure it is compatible with your motherboard either from its QVL List or from the Memory Manufacturer's QVL list website.
One really good website to go to is PCPARTPICKER: https://pcpartpicker.com/products/
That website is made for Users like yourself who wants to either build their own PC or upgrade their hardware.
Just click on the Motherboard you now have and the click on Memory to see all the RAM Memory that is compatible.