How do I get my music back?

I have songs that purchased on my iPod in the iTunes Store and digitally downloaded onto my iPod like… YEARS ago but still using the same account. But at some point I deleted them from my library and whatnot and considering I paid money for them I expected to be able to download later on but now they are nowhere to be found in my purchase history and when I look them up on iTunes Store it shows the 1.29 cents icon as if I never bought it. I'm using an iPod touch 6th gen with the latest iOS if anyone knows how to get my music back that'd be great nothing I find online is helping.

This is why you should Not delete things from your library.
It's the same as if you had a physical CD and threw it away.
Pay for the songs again or do without.

Just call apple and they can help you either recover them or they will need to purchase info and they can look it up for you.