For alternative European providers, I recommend OVH. Some euros pricier, but good.
I checked yesterday. The cheapest vm I can get from them was something like 25 euros/month. The one I get from Hetzner was 6/month and now will be 8 per month. That's a 3x difference. A little cheaper than GCP/AWS. But not a whole lot. I went with Hetzner based on that as I'm trying to reduce an 800 euro/month Elastic Cloud + GCP bill to < 100 month. Even with the price increases, I should get below 100/month.
Used to have my VPS' with OVH a few years back but noticed the performance was significantly worse than similarly priced Hetzner ones. Not sure if that changed.
Regarding alternative VPS providers, Infomaniak in Switzerland have decent prices on their Lite range [0]. I'll stick with Hetzner but if I move some day, I might try them out.
I've been on OVH forever, but recently switched to Hetzner as OVH doesn't have their equivalent of their auction servers which are great if you are looking for combinations of SSD + HDD servers. These don't really exist at OVH unless you pay > 200 euro / month.
I have received awful, slow, inaccurate support from ovh. Avoid.
OVH also increased their pricing significantly.
If your only complaint with Hetzner is the price hike, though, it makes no sense to migrate to a more expensive vendor.