You have every right to complain. Why call it that though? You are stating how you feel, and you have every right-- esp on here! I'll just speak for myself, I feel exactly how you do. In fact I think it's safe to say most of the world, particularly because of the pandemic, are feeling the same way you are.
How do I cope? I have a therapist, and a pastor I can call/talk to. I really don't pay much attention to the news, I try to stay informed but it triggers me sooooo much!
I try to pray for others, next moment I'm yelling at God, "Why'd you let that happen? What's the point!? Hello? Hello!"
I come on here, great place to come on here. I rant here, to myself, to God, to the universe. "HELLO!?" LOL
Then I read your post, and I definitely don't feel alone. Almha, thank YOU