They should have marketed it better if they wanted people to watch. It's their own fault they have to cancel it.
Also possible the young kids have little to no connection to Star Trek and it was never gonna have much of an audience. Star Trek was very much an adult show with cross over appeal to kids rather than a direct kids show. I wonder if kids that grew up on Miles of Tomorrow on Disney switched to trek as that show was very much a trek primer.
Watching Trek now it is SOOOOOO expensive, I think they really limits their desire to take risks. I think I would prefer a low budget show that has more highs and some lows rather than the homogenous, bland, glittery nu-trek. SNW is better, but still not really forward thinking conceptually (for example, with their budget they COULD be doing stuff like David Brin's uplift and have a chimp/dolphin/dog member of the crew to predict future attitudes towards human/animal interactions, instead it is really just doubling down on current social trends). I feel like TOS did a far better job of guessing actual future developments than SNW (and I don't think STD did much of anything from what little of it I saw). Trek needs to be thinking harder IMHO.