How to fix a stuck brake caliper in an Audi 80?

I recently noticed my Audi 80's brake caliper getting stuck, causing problems with braking. How can I fix this issue?

Firstly, check the brake hose and make sure it isn't damaged or cracked. If it is, it may be causing a restriction in the brake fluid flow. Replace the hose if needed.

Next, try bleeding the brakes to remove any air bubbles that may be causing the caliper to stick. This can be done with a brake bleeder kit or by manually bleeding the brakes.

If those steps don't work, the caliper itself may be damaged. You can try cleaning and lubricating the caliper, but if that doesn't help, it may need to be replaced.