LG Bluetooth soundbar (model nb3510a) integration help?!?!

Hi all! newbie here. I was hoping to use my various soundbars and older Bluetooth speakers to play music throughout the house and ideally be categorized and controllable by room. I have gotten some integrations done but I’m still new. Can anyone lend a hand?

The speakers in question are:
lg nb3510a
Samsung hw-j6000

The best advice I could manage to Google was to use a home app like Google home or smart things to find the device then integrate into HA. However, the home apps don’t see these two speakers. They’re Bluetooth not WiFi. Samsung claims smart things should be able to pick it up, but it didn’t find It.

Any thoughts? FYI I would prefer software vs building a pi or something if possible. Someone mentioned connecting an extra cell phone to the network somehow, but I couldn’t understand the instructions…