"to a certain German hosting provider" Hetzner
Yeah, don't want to provide free advertising (they don't need it), but they should be as reliable as OVH for hosting servers in Europe.
Until you get DDOSed and then they (Hetzner) null-route your server.
They claim not to:
https://twitter.com/hetzner_online/status/968085046073622528...
I do wonder if that is still the case.
edit: Maybe not: https://community.centminmod.com/threads/any-personal-feedba...
That is quite normal behavior for most hosters and it depends on the strength of DDOS. If you have to deal with DDOS frequently then you need a loadbalancer in between your service and your clients, that offers DDOS protection.
* Compared to a certain German hosting provider, where I can get AMD EPYC 7502P with 128GB RAM for about 100EUR. Again don't know the arrangement, but with some effort they could add more servers, lower the cost and add Geo-resiliency.