I think part of the reason it seems to be getting worse is the frequency of negative news images broadcast into our homes in graphic detail, with the same story repeated multiple times a day and people discussing even more frequently online on social media.
That has to be a different relationship with events that would otherwise not effect us and which we have no control over than if you were reading the Sunday newspapers once a week etc.
Combined with population, that's 8 billion people now who something horrible could happen to and we'd likely hear about it possibly in graphic detail with news reporters asking witnesses or recently bereaved people who are likely still in shock how they feel, to create content for people watching from the safety of their own homes.
Another aspect is that our adults usually shielded our exposure to the dangers in our childhoods, but as the adult you are so much more aware of them for your children.
There was a study done after the Boston marathon bombing ( pubmed.ncbi.nlm.nih.gov/24324161/ ) which found that watching 6 hrs of news coverage about the bombings the week after it was associated with a stronger stress response than in people who were there.
Seriously, think about life a hundred years ago without the health care, the freedoms for women, the world wars etc. This is the safest period in human history with the least conflict. There are challenges, but we also have so much more technology and knowledge to tackle them.
My son was diagnosed with T1 diabetes last year, whilst it is a serious diagnosis which as far as we know at the moment he'll have to manage daily with every meal for the rest of his life. We are so grateful he was diagnosed in 2024 with all the technology and treatment available rather than any time in the past.
So I think what helps is limit our exposure to news (less frequency, less graphic, less immediate - Cal Newport suggests only reading a weekly magazine or paper that puts news more in context and analyses it like the New Yorker (he's American), spend time in nature and in community with real people in person rather than online where there is an incentive to be sensational and polarised for attention.
In general for anxiety I've found it helpful to separate the things I can control from those I can't and to focus my efforts on the former rather than worry about the latter which worrying won't help. Ancient wisdom from the Stoics and the Serenity Prayer etc and it works.