Favicon... still having sizing issues

Hi! I have read through the threads talking about the issue with resizing an image for a favicon but I do not have illustrator or anything like that. I am working on a mac and have tried all ways to reduce the size but the message is still showing up saying that the image is not 32x32 or 256x256. How can I resolve this on a mac? Thanks!!

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

You got a transparent background, right?

I usually use Figma for this.
The frame has an export option where you can set both the 32w and the 256w at the same time, and export both at once.

That was the issue, thank you so much!!