I put refrigerant in my car but a couple days later it made a loud noise and I seen smoke come out from underneath my car and now it’s not blowing cold air at all

Since the a/c compressor has it’s own ‘independent’ drive belt - there is a ‘possibility’ the a/c compressor itself has locked and the belt has been ejected - however that should have produced a burning smell - which was not mentioned in your question. In any event *hands-on* evaluations will be required - by qualified personnel. Good luck!