Antennas don’t connect to HDMI ports. They normally have an F connector that matches the Antenna port on your TV. (That’s the coaxial port with the skinny central connector, generally labeled ANT, ANT/Cable or Antenna.) Then you just switch the TV to the antenna input. This style of antenna connection predates HDMI by about 50 years, so regardless of whether the TV is new or old, it should have one.
Banned but back. Because why not?