It's a really sad tragedy indeed. It's totally normal and understandable for you to react this way.
I used to react to terrible tragedies in the exact same way. I'd become so distraught, anxious, and sad, even if I had no connection to the tragedy whatsoever. I would ruminate about it over and over again, thinking about the details and what it must have been like to be there. It felt like if I thought about it enough, or in the "perfect" way, I could somehow reverse the tragedy or make things better.
A few things that might help you:
The first is recognizing how this cycle of spiraling thoughts is being fueled, which is where OCD comes in. With OCD, when something feels "wrong" in any way, we do everything in our power to try to make it feel right. Even if something feels 0.0001% wrong, we have a lot of trouble letting it go.
It feels like in order to get past this, you need to solve all of these questions you have. It feels like this feeling won't go away until you figure out why something like this can happen, and what the "point" of life is. But that's not really the case. You don't need to answer those questions, and you will likely never be satisfied with any answers you come up with.
The reality is that tragedies can happen to anyone at any time, and that makes you feel uncomfortable. All of these questions are really just a way of trying to avoid that discomfort. The way to move forward is to learn that you can sit with that discomfort without getting lost in a spiral of thoughts about what it all "means." As you allow yourself to feel sad, anxious, or even angry, about a these tragedies, without adding any additional stories on top of it, you'll find that those uncomfortable emotions come and go on their own.
An OCD specialist could help you with all of that, particularly with ERP therapy. If you have the means to do so, I recommend speaking to one if you aren't already.
The second thing is that you're experiencing what I like to call "death whiplash." When we spend most of our days without recognizing the reality of death (as most people do), we become extra distraught when confronted with it. It's like reality punching you in the face. It can feel extremely scary, and it can throw you into an existential crisis.
This may sound strange, but if you can find a *healthy* way to routinely reflect on death, and the universality of suffering in general, you will help diffuse this "death whiplash" when these terrible events happen. I stress the word "healthy" because I'm not talking about dwelling on the fact that we're all going to die (which is what you're experiencing right now), I'm talking about a very grounded and factual understanding and appreciation of the nature of death. If done right, this reflection will help you enjoy life more, be more kind, and not be so bothered by little things that don't really matter. And when tragedies happen, you will still feel sad about them, but you will be less likely to spiral into an existential crisis.
Hope some of this is helpful. Be well!
