I guess pretty much any bread knife is a bifl one, but in the twenty odd years i’ve had this, i keep thinking to myself that this knife is awesome basically any time i use it. That’s why i want to recommend it. When I bought it it was quite cheap too, does not seem to be the case anymore. Is a Victorinox 5.2930.26
It is likely to be similar or somewhat lower price, give or take, but it will take you some effort and time to make (think at least 2 hours for a regular single-stage yeast bread, longer for sourdough)
If you want to save on your groceries, this probably isn’t the optimal way unless bread is heavily overpriced in your area.
Also, mixing in proteins might necessitate changes in recipe/process depending on what you add - just a heads up if you’re gonna do it anyway :)