Originally Posted by ToxicChopSticks
"The budget is not more than 100 Euro, I have tried Hetzner/Server4you/webtropia."
Not sure how many game servers you are trying to run on that server but CS 1.6 doesn't require a lot of RAM. The CPU will be your main bottleneck. Then you will need a provider with a solid and reliable network, a provider with a lot of peerings would be A+.
I would recommend to just rent a few game servers from a reputable company. You can always get your own dedicated server once you built up your community and get donations etc.