Buy your own sweet potatoes. You can slice them as thinly as you can with a knife, or with a mandolin and then cut those in strips. Or use a spiralizer. A spiralizer is anywhere from $15 to $50 and you can find it at Walmart or in links ——->
If you are going to use it often, it’s worth it. You can also spiralize zucchini, carrots, eggplant, beets and regular potatoes.