Clogged - Slow Draining Sink - Fix - How to unclog and drain faster

Is your sink draining slow? Is your sink not draining at all? Whole kit with AAV - https://amzn.to/426ONo8 Just the AAV - https://amzn.to/4gN9TMy Our kitchen sink at our new country house isn't draining or would drain very very slow. We tried a plunger, hot water, vinegar and baking soda, and still had the same problem. Our issue ended up being no air flow and adding a Air Admittance valve did the trick and the drain empties like it should now.