If you're not in the mood for a book, there's a great mini-series adaptation that was produced in Russia in the 2000s that takes about a week to watch. It does an almost perfect job of reproducing the book. I don't think it's available online.
Likewise, I've found friends with far worse actual problems in the developing world to be existentially happier. They derive great pleasure in being able to go to a rock concert, etc. The game dynamics still work for the majority. Lots of intermediary issues to overcome, bosses to beat. Threat of destruction (socially or economically) seems to be wonderfully stimulating. Game dynamics still work.
What I find far worse is the banality of the first world. That seems to evoke and ferment existential concerns. Kind of along the lines of https://www.youtube.com/watch?v=98LeLZ2crZE
In a way, it is the problem one faces once more basic things are taken care of. Hard to focus on existential angst when hungry.
At the end of the day, even though the universe itself may be arbitrary and doomed, I found that the only things that infuse durable meaning into us as humans is our love for each other, our desire to understand this universe, and our appreciation of beauty in all its forms.
And about first world banality - the book of Ecclesiastes in the the bible addresses this also:
"I denied myself nothing my eyes desired; I refused my heart no pleasure. My heart took delight in all my labor, and this was the reward for all my toil. Yet when I surveyed all that my hands had done and what I had toiled to achieve, everything was meaningless, a chasing after the wind; nothing was gained under the sun."
I had the existential depressions when I was 19 - 24. I dropped out of college and all my parents knew to do (and did) was put me in a psych ward and 'treat' me with electroshock. That didn't work.
An even more disturbing take on this is that totalitarianism also gives some people a more sinister cause: the oppression itself. I think many people in the various surveillance agencies in totalitarian states actually believed in what they were doing, and many even enjoyed it.