General brake question

True, the front pads do not expand to press on the disks no matter how many times I press on the pedal. There's a 1/8" space between the pads and the disk.
And the brake fluid in the reservoir never budged.

The front brakes not releasing is concerning, as both calipers seizing at same time isn't likely, so pressure not releasing is likely.
Now the pump/master cyl doesn't appear to be able to make pressure, so is suspect.
I've had contaminated brake fluid cause rubber seals to swell, blocking a master cyl port, causing similar, on a motorcycle as well.