Does porridge or overnight oats with fruits count?

I would presume so. Both contain aspertame, and afaik this is the reason why they say it is carcinogen. So very much „diet“ stuff and sweeteners has this in, you should be careful.

Our public library has the function to borrow e-books (called onleihe, but this counts only for some libraries in germany). I use this a lot.

I am from Germany

Interesting. I absolutely would horrify people. Especially children. Like ruining their sleep. Mess with them until they are admitted to the funny farm. Grow a habit out of that and do that over and over again, in different areas of the world until I become a legend of a nightmare that actually comes true.