I just installed Firefox on a new device and wanted to set it up to mirrow my Firefox setup on another device. On this other device, I use both Firefox and Chrome, but I keep them separate, so that Chrome is associated with my Google account and Firefox with my work/professional account. When I installed Firefox on my new device, it defaulted to using bookmarks from my Chrome account somehow. Thinking I could inherit the correct bookmarks from Firefox on my old device, I turned on Sync for my new Firefox. But this had the opposite effect: it sent the Chrome bookmarks from my new Firefox to the Firefox on my old device. I even have a third device running Firefox in the same framework as my old device (so, Firefox=professional, Chrome=personal/Google), and this third device also automatically acquired the Chrome bookmarks from the Firefox on my new device.

How do I fix this? How do I recover the Firefox bookmarks (my non-Google Chrome bookmarks)? Thank you!