in reply to Money is not purpose of my life, but...
I did a little digging for my home town, Colorado Springs, Colorado: a good sized city in the shadow of Pikes Peak with lots of outdoor recreation opportunities year round.
The cost for a low end apartment; the smallest I could find was 475 square feet (and according to google your present apartment is about 540 square feet) the rent was $400 US per month (yours converted to $365 US per month).
$0.68 US per square foot for you, $0.84 US per square foot here.
I would expect someone with your experience to make about $50,000 US a year, about $3,000 US after taxes (or about 2300 euros) a month.