Come on mate, you're surely better than this.
The news is obviously not the sole preserve of monarchists. Equally, the TV news is hardly an objective source of information, nor does it ever cover a wide range of topics. Does anyone really pay much attention to mainstream broadcast TV news these days, when so many alternatives of superior quality, depth and range are readily available? Do you really think the BBC would be doing great work covering the cost of living crisis if the Queen hadn't died? I doubt it, because they weren't doing anything much on it two weeks ago.
Your concerns regarding other topics that should be covered by the news are very valid indeed, but the news wasn't covering those topics before either, so why on earth blame the Queen / the monarchy? Makes no sense.