Good on you for looking for an ethically sound option! Can’t speak to their manufacturing, but Valve has the Steam Deck you can get cheap, runs Linux in desktop mode (still handeld, just called that to differentiate from SteamOS). Works rather well! And Valve is nowhere near perfect, but they’re much less of an ethical quagmire than some other producers.
This! Consoles are losing to handhelds like the Steam Deck in terms of capability and price. This keeps up, and we might see more switch over!