First time having manual brakes, are mine bad?

I had a Ford truck with that situation. That turnout to be rusted/frozen pads in the calipers that no longer moved. But I guess you would know that since you had it apart.

A lot of good input. I would say don’t forget frozen caliper pistons. Remove the caliper Have someone step on the peddle slowly and watch the pistons moved. See if you noticed pitted bottom edges on the calipers. If you can pull away the boot to check even better. You can always push them back in with a C clamp.

Rust in the MC bore. When you open the bleeder screws it should shoot out.

Worse case reading the others is frozen MC or possibly a bad proportionating valve if you have one. They come apart and are supposed to indicate loss of brakes with the use of the a plunger that moves. Especially for a car that sat a long time. Trace your brake light cable to find it.

Different input. Good luck