soundbars

Was given a soundbar without remote or sub so wondering if i can use it without a remote. actual model # is XHCOOUH but when i search that it gives me the FWSB415E.

I am looking for a soundbar to improve my sound from my older Emerson model LF501EM5F TV. Nearly all of the ones I have looked out have square digital audio, HDMI-ARC or Bluetooth connections. My TV has round digital and HDMI 1 ports. So, can you suggest a soundbar that will work or adapters...