You can look at infomaniak, they host everything in Switzerland and use 100% green energy. They also build on open source standards in a lot of places.
But in the end, servers are power hungry and need a lot of rare earths, other minarals and large amounts of energy to be produced.
I use the public cloud with the smallest tier with storage to host a django app: https://pflaenz.li
It costs around 4$/month and runs great!