I have used Linux in some form or fashion since 2001ish.
I’m saying that to provide perspective for what I am about to say next: linux has made more “regular user” progress in the last 2-3 years than I’ve ever seen. This past year since the steam deck came out has been great for linux gamers.
I personally use PopOS since it’s the best mix of all the things I care about and it’s rock solid.
Mint is also a great choice. Feel free to ask questions as they pop up!
As with anything, back up your important stuff so if you end up doing something stupid, you will just kick yourself and not cry.
My noise cancelling headphones are the only reason I survived so far. At first I felt like I was being a bad parent, but I realized wearing them made me a better parent. Like you said, I was able to stay more rational and disconnect a little from the screaming.