Does covering multiple unrelated topics (cooking, TV shows, cars) make a blog stronger or weaker?

Maybe make different categories of your blog and separate it by topic. So have your main feed of just a compilation of every blog post, then on the top of the page have different urls to different categories. As long as your blogs are of quality content, I believe they will drive more traffic.

Depends on the content you put in, also how interesting your pictures and videos are.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.