Just a shot in the dark but I thought it’s worth trying:
I bought this old Brother machine, but it came without a foot pedal. The machine has a power cable and another cable with a 2-pin flat prong female connector, which is where the pedal is supposed to go.
All the “universal” pedals I see online don’t have this kind of connector. Does anyone know where I can find a replacement, or even what type of pedal I’m looking for?
I'm only a beginner, and I don't really know, but I wonder whether it's worth contacting a sewing machine servicer / repair person to take a look at it (do you know whether the electrics are good and working?). The other thing is a sewing machine repair person may have spare parts for vintage machines?
Do you have the sewing machine manual?
I think the machine you have is a Brother Super Flairmatic 190B sewing machine. (I used Google lens on the picture you posted). If you search this on Google, you'll find quite a bit of information, and there's even a YouTube video!!!
You might even be able to find a manual this way. Good luck!!!
Honestly you might be better off going to an electronics repair shop. If they can tell you the plug type and electrical specs, it doesn't have to be the exact model as the original.
Thanks for the tip! I actually ended up emailing every sewing machine repair shop in the country (there aren’t many) and struck gold with one. I now have a working machine!