I was wondering if it’s possible to use it to stream music via USBC.
Not via USBC, no.
You've got 2 analogue line inputs on that Denon, 'tape' and 'aux', which are effectively the same thing, just with different labels.
If your phone has a headphone socket, you could connect that to one of the inputs and hear phone sound via the Denon.
Or you could get a cheap streamer to connect to it. In that case, the phone would be controlling the streamer - which relays the streams from the internet.
As for whether the M33 is any good.
Well there have been many updates to the model (now on 41) which doesn't make it bad necessarily - but there's no doubt you could do better in terms of amplification.