Hello, I'm looking for another knife that has this shape as you can see the handle has about had it on this one. All the knives i see have more curves to them, it does not need to super fancy as I highly doubt this is a high end knife.
At first glance your knife looks like a boning knife, maybe Case or Mercer, that has been heavily used and sharpened over time. I suspect your knife originally had more curve to it. I'd be surprised if you found a replacement knife with that same profile.