Voice assistant, media player, TTS, wyoming protocol, android PC - HOW?

Hello, im new to HA, one thing im missing is how and why there is no way to set up voice assistant on a PC hardware or maybe on old phone (we all have old phones, so why not use them?).

All i see people working on setting things up on some low power, barely working hardwared like ESP, rastaberry pie, and other alternatives. But nobody has a solution for android, linux, windows in general…

Windows, had HASS.Agent but it does not work as media player, and i could not get it to work. All i can get is sensor data…

My plan was to have a voice assistant satellite like alexa or something but all done locally including LLM.

Now i can maybe someone point me into some sort of solution that “normal” people can set up without some weird hardware? - android/linux.

All i could find someone making something to that sort but with janky apps and setups… i wonder why there is no all-in-one solution already for this… its about time!