Some states already require foreign students to pay 500€ each semester and others will follow. On top of that you will have to guarantee that you can support your life in Germany, meaning you are not eligible for any kind of government support if things get tough or you lose your job.
Going there thinking everything will be provided is wrong and the COVID-19 crisis will get a lot of foreign students into deep trouble as they lose their jobs and can't support themselves.
A lot of EU countries are not issuing standard/typical/normal visas at all. You can most likely forget getting a student visa altogether. At this point, you cannot even legally enter the EU (Schengen zone + more) without being an EU citizen or resident, unless you are a third-national humanitarian aid worker or diplomat, basically.
Depends where you go. I know we had some Chinese students in my college, they paid €10000 a year, compared to the Irish students who paid €3000 a year.
As far as I've heard, US colleges are on the order of $10000+ per semester.
There's also a point about sticker price vs. actual price. Anyone actually paying six figures for a Bachelor's degree is not only getting fleeced by an expensive school, but also can probably afford it (no need-based scholarships or grants?) and is also not very smart (no merit-based scholarships or grants?).
It depends on the country and sometimes the institution and program. Here is a price list from a Swedish university with the approx. USD amounts being between $10,000 to $30,000 depending on the program: