npub15yx2dr80jlmpqmyx5nem8xwvmm32w0d6p97xaypuzw9u3uj2ffxscgmaw2 (npub15yx…maw2) my 8bitdo Bluetooth controller works well with my Steam deck. Have you tried out one of those?
Of course it's laughable that the Steam controller doesn't play well with the Steam deck...