Rye flour grows in colder climates. It makes quite dense bread, due to a lack of gluten. This makes kneading it a waste of time, as you can’t stretch out the proteins.
Modern crumpets use Bicarb to add bubbles, so if not making authentically you could add a tsp to the mix.
Nothing beats a freshly baked sourdough loaf
A sourdough starter is a great natural way to rise a loaf of bread