After some searching across the themes on wordpress.org I found a theme that I like: https://wordpress.org/themes/raindrops I like it much more than the default theme Twenty Fourteen. It allows to change and customize a lot more things(have a look at my pictures) than Twenty Fourteen, the blog posts are in the middle of the screen and the blog titles are not automatically set to uppercase letters. I also prefer the character font. While I`m not 100% sure if I keep the raindrops theme, maybe I find something even better,  it is a good base to start with my blog. And it is free!