I would say a Master cylinder issue then, it reads like it has shifted or come loose.
On the upper clutch pedal arm there is a rod, a push rod, that goes to Master cylinder.
When you push in the clutch pedal this push rod pushes in the master cylinder piston which forces fluid into slave, which pushes on the pressure plate and disengages the clutch disc.
Clamped on this push rod is the Clutch safety switch, when you turn the key to START 12volts travels down a wire to the Clutch safety switch, if the switch is "closed" that 12volts travels to the starter relay which closes and activates the starter motor, so if the safety switch never closes starter motor will never come on.
The clutch safety switch is only "closed" when it is compressed between clutch pedal arm and master cylinder, so engine will only turn over/crank when clutch pedal is in.
If the master cylinder has moved or the push rod is damaged the switch would never be "closed".
So I would start there, under the dash at the upper clutch pedal.