Got 4 codes: 3 were P0324 and 1 was P0326; they all say knock sensor

I have a 2013 chevy cruze, 1.4L. My KM are about 66,900. my engine light came on and the car is holding back when I drive/go up hills, and then randomly it will have power again and then will hold back again when I press the gas. I do not have get up and go like I use to because of this. The codes I got were P0324 (3 times) and 1 P0326.
Anyone know what this may be? Spark plugs, knock sensor? I don't want to drop it off and spend hundreds of dollars but I may need too

Thanks Everyone