My undercarriage plastic is loose and I hear noise every time I make a turn it is a clicking sound

My car was making this clicking sound every time I make a turn and the undercarriage plastic cover is loose and dragging the ground. I do not know if that I is the problem or not. Now today the click noise is occurring even when I drive on straight road and my steering wheel feels like it is wobbly. Car is pretty old with a ton of miles, and trying to hold on to it a while longer. What do you think the problems are? Please advise.