You could knock on the hinge pillar with a BFH. Next would be pushing on the opening a bit with a porta power. Find a different door that fits better.
Or cut the bottom jamb, spread a touch, then add filler. But that would also require cutting floor and other stuff. Invasive surgery.
You could also get a block of wood or block of metal, and with a hammer, beat the corner edge back some to manufacture gap.
