I have an Tv/DTV issue

Oct 6, 2018
I have an older HDTV Vizio. I bought a RCA digital antenna for the tv. So, when first hooked it up, I put the input to tv. I scanned for channels but all came in fuzzy. Like nothing was hooked up. I tried on DTV and I can't scan at all. When I use the menu to get to the tv portion, it disappears. Is it me or my tv. Please help if you can. Thank you!!!