Recently some people rescued a kangaroo from drowning and gave the marsupial some mouth to mouth resuscitation. I shared this story with animal loving members of the family and we were all moved by it, reassured that humanity was out there in this cruel world.
However, was it news?
This was news in the broader sense of the word but really it was just a human interest story (and maybe a kangaroo interest story).
If we look at the divers rescuing boys from a cave story that Elon Musk got so badly wrong then the same criteria can be applied. Yet their rescue certainly was news. But we didn't give as much scrutiny to the thousands of people rescued in Japan from floodwaters at or around the same time. My Japanese neighbours could have done with less of Elon Musk that week and more of Japan. For them the good news of the rescue in Thailand was at a cost of hearing good (and bad) news from Japan.
Invariably there is a political aspect to the news beyond human interest stories.
For instance, if Donald Trump choked on a pretzel (heaven forbid) and had to leave office due to the calamity then some people would be absolutely delighted, for them this would be 'good news'. Same goes with news regarding the economy. If house prices go up then this is good news to the rent-seeking class but it is not good news for those that are not on the housing ladder and have to pay more money to the rent-seeking class.
Even sport has the same problem, if Burkina Faso beat Brazil in the World Cup then a lot of people would be absolutely gutted, it would not be received as 'good news'.
Given that you are not in control of the content and are stuck with what you have got in that aspect (copying from Reddit) you might want to do what others in this comment section have suggested - remove the 'not' and the 'depressing' from the title. There is a double negative going on there. My suggestion is to go for something where you don't have to limit yourself to mere human interest stories, take a side but leave the politics aside. If you went with something like 'underdog news' then you would be able to take the side of 'Burkina Faso against Brazil' without a problem, plus you could do a nifty logo. You could also engage with your audience on this basis, get them to mod up/down stories based on whether there was some epic struggle going on with a clear underdog. Small child beating grand master at chess? Clearly epic for the underdog. You can sidestep the Trumps/Brexits of the world with this type of a spin and not decide what is and what isn't 'non depressing'.