I have set up two personal VPNs and six client machines (phones, laptops) for myself using OpenVPN. As I understand it you want to mask your internet address and enhance your wi-fi privacy by routing your network traffic through a server in Germany.
I will find you a suitable host and fully configure your server. You will have to pay for the server on your own of course (unless you already have one). This will be a proper VPN, not a simple proxy. As such, it can also be used to create private connections between two remote machines.
Freelancer charges $5 below $45. A $10 budget ($5 paid to the freelancer) is too low for professional work.