How to troubleshoot a coolant leak in an Audi 80?

I noticed that there is a puddle of coolant under my parked Audi 80 and want to fix it ASAP to avoid any potential damage. Can someone give me some tips on how to troubleshoot and fix a coolant leak?

First, check the radiator and all the hoses for any cracks or holes that could be causing the leak. If everything looks intact, then it could be a faulty water pump or a blown head gasket. You may need to take it to a professional mechanic for further diagnosis and repair.

One possible issue could be a loose or damaged radiator cap. Check if it's tightly sealed and replace it if necessary. Also, check the coolant levels and top up if needed.