The a/c in our car is start to make some odd noises

I hate that I don’t suppose anything about fixing cars. When it comes to vehicles, I am completely clueless. I suppose how to change our oil, change the spark plugs, plus grease fittings, plus that is it. I don’t suppose how to do anything else. It honestly is our fault that I don’t suppose how to repair cars because our dad is a mechanic that provided to teach myself and others things. Since I declined to learn, it is now our task to pay someone else to repair our car, then recently, the Heating plus A/C unit in our car has been causing myself and others to become nervous about our vehicle. When I bought this car, the a/c was amazing. The a/c in our car would literally freeze you out of the car if you turned it on the highest setting, and lately, the a/c has been struggling to cool down to temperature while in hotter nights while in the summer. It will take 15-20 minutes to reach the temperature on the temperature control when it only used to take 2-5 minutes. Once the a/c starts running at its highest temperature, the a/c will make these unusual whooshing sounds while I am driving. One time, the a/c even started spraying chunks of ice out of the vent. I am nervous about this because a/cs aren’t cheap in cars. Fixing an a/c can cost you thoUSnds of dollars, plus I frankly don’ have enough currency to pay for that… However, I also don’t want to drive a car that doesn’t have an a/c. I don’t suppose what to do.

a/c workman