I'm an undergraduate student and in no financial position to start or join a company.
This just further illustrates that a large segment of society is powerless against things like this. The headlines don't help, they just actively worsen my mental health.
I'd look at the positive trends. Dire warnings have, in the past, often lead to improvements that prevented the worst outcomes.
Fatalism and resignation are not good nor helpful for you as an individual, nor for society as a whole (they also forestall meaningful corrective action).
The fact is that large trends have mostly pointed in the right direction over the last century or so, on a worldwide scale. (Examples: [1]-[17])
Note: Some of these writers and arguments are co-opted by rabid libertarians or ideologues that argue that all is well, there is nothing to worry about, and nothing needs to be done (and certainly no government regulation of business) [N1]. That is nonsense, and not a position I advocate.
There are many worrisome trends, and we have to do something about them. But, there have been predictions of doom since the dawn of mankind (see: Malthus [D1], Ehrlich [D2]), and they have not panned out, either.
Conclusion/TL;DR: Things have largely gotten better for humanity over long timeframes. There are still many problems now (inequality, climate, etc.), but if we apply ourselves, there is a good chance we can tackle them.
[D2] Ehrlich, in 1968: "The battle to feed all of humanity is over. In the 1970s hundreds of millions of people will starve to death in spite of any crash programs embarked upon now. At this late date nothing can prevent a substantial increase in the world death rate." [https://en.wikipedia.org/wiki/The_Population_Bomb] But a UN report in 2010: 'the percentage of the world's population who qualify as "undernourished" has fallen by more than half, from 33 percent to about 16 percent, since Ehrlich published The Population Bomb.'
This just further illustrates that a large segment of society is powerless against things like this. The headlines don't help, they just actively worsen my mental health.