The first floor is an underground parking lot. I live on the second floor for feng shui.

First of all, it is no problem for you to live on the second floor, and the underground parking garage will not affect you. The point is that you didn't say the direction and sitting direction of the house where you live. Secondly, you didn't say anything about the environment around your house. Finally, you didn't say the internal structure of your house, so you can't help you judge whether it is good or bad. If you want to see Feng Shui, you'd better draw photos of your home, the surrounding situation and the internal pattern, or send photos to help you break it. Good luck!