I recommend Netcup as a solid EU budget alternative to Hetzner, zero complaints from me.
They are solid and cheaper, but they don't offer the same level of control plane and API access as Hetzner that is really helpful when managing a larger number of servers.
Their ARM64 boxes are fantastic, but sold out at the moment.
This is probably the best alternative provider for individuals that I could find, unless you're orchestrating a fleet of servers or something. Personally I'll wait out my next billing cycle with hetzner, as I expect other hosts to follow shortly.