I know you probably should request at least 80 eur/h as a freelance but finding a company willing to go for that out of nowhere is impossible. You need really good network to be able to do this. Chance of a company offering a random dude from the internet those rates is near zero. They can hire two cheap devs for that and profit much more, even if those developers will do worse job than you. A lot also depends on the stack you work in. .NET is not as hot as React f.e.