The car blows cool but not cold air. It's not the Freon. It's cold coming off the compressor but doesn't reach the can.
Air conditioning is a complex and delicate system. The only way to properly diagnose a system is with a lot of specialized equipment. There are too many variables to guess. A short list for a under-performing system are: a weak compressor, too much/little refrigerant, too little outside air flow over condensor or evaporator, biased expansion valve, biased evaporator temp sensor, contaminated refrigerant, etc. A qualified mechanic from YourMechanic can come out and diagnose your air conditioning system to see what is going wrong.
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