Watch US Netflix in DE?

I would like to see American Netflix on my German account.

There's much more in America, German Netflix only offers 31% of the series that America offers.

I would also like to watch The Walking Dead, season 10 is already out in the US, here in DE I have to wait a year, then I have already forgotten everything.

You would have to have a program like NordVPN to do this, but it will cost you.

I have already tried a VPN, unfortunately without success

It works with NordVPN. I don't know anything else.