How does prayer impact those in need? Is there evidence that God intervenes and improves situations based on our prayers, or is it a psychological belief?

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• I committed the unpardonable sin. God immediately punished me so that I can no longer think like before and my brain is as if paralyzed and does not work. I've tried everything (confession, repentance, etc.) nothing helps. Any advice?
• Is it possible for doctors to diagnose prostate cancer just by looking at a patient?
• Can you tell me a depressing story?
• Hi, I’m Jo. My best friend died 2 years ago today. My husband died 6 months later. So, I’m a depressed mess (we were married 28 years) and can’t shake it. Even my Brother is worried. Some days I don’t do anything, and avoid men cause I don’t want to date. Any suggestions? Thanks for reading.
• Trump is going to target known criminals in the country illegally for deportation. The Democrats have vowed to fight him every step of the way. Don't they understand this is one of the issues that cost them the white house, the house and senate?
• What do you think of Hegseth calling The Atlantic journalist Jeffrey Goldberg, "a deceitful and highly discredited so-called journalist who has made a profession of peddling hoaxes” after team Trump texted him their top-secret war plans on Yemen?
• Is the Chinese economy currently collapsing? If not, what could potentially cause it to collapse?
• What is your favourite colour and why?
• Why cant I sleep? When I'm about to fall asleep, I get excited that im about to sleep, causing me to wake up again. It repeats till my sleepiness is gone. I tried taking melatonin and not using my phone, but I end upawake for hours.
• If gays can get married, why can't I marry my dog or a cheeseburger?
• Do all armies have the same rank structure?