How to troubleshoot a faulty air conditioning in my Kia Rio?

I recently noticed that my Kia Rio's air conditioning is not cooling as it used to. How can I troubleshoot this issue?

Firstly, check if the air conditioning compressor is properly working or not. If the compressor is faulty, it will need to be replaced.

Another possible cause could be a low refrigerant level. Get a professional to check and refill the refrigerant if needed.

It could also be a problem with the condenser or evaporator. These components may need to be cleaned or replaced.