how can I setup my new Mac mini without keyboard

Right. A wired keyboard. But my attempt to get thru Setup Assistant with a wired Apple keyboard failed.

Not sure if there was a problem with the new M1 Mini I received, or not. Had to send it back, and now waiting for replacement. I fear there may be hidden problems with the M1 (hardware or software). See my post to this forum earlier today.

You need a keyboard, period. Get a cheap USB keyboard (~$20).

No mind over matter supported. Buy a decent wired keyboard, and probably a wired mouse too.