Unless you live on a hill with a clear shot of the nearest towers, you are not going to get much of anything with an antenna behind the tv. Digital signals are just not forgiving with obstructive views, unlike old analog signals.
Try: https://www.antennaweb.org/
to see if that even shows what channels you might get. It might not even show much based on the distances you listed. As mentioned you're going to prob have to mount an antenna outside and as high off the ground you can get. Channelmaster are pretty good antennas as well.
www.channelmaster.com
Go as long range as you can. Good luck. My parents are about the same distance and are pretty limited.
Try: https://www.antennaweb.org/
to see if that even shows what channels you might get. It might not even show much based on the distances you listed. As mentioned you're going to prob have to mount an antenna outside and as high off the ground you can get. Channelmaster are pretty good antennas as well.
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Shop our Specialty Series line of antennas for the best outdoor TV antenna to meet your specific reception needs. Channel Master, since 1949.