You mustn’t have moved from an EU country to another.
Being an EU citizen, I drank the cool-aid about the freedom of move and work in any EU country, but the reality being that there are so many cultural, linguistic, administrative, legislative (and other) differences between a country to another that the overall experience is painful and except for very high incentives (big salary increase) the experience is not great.
I struggled less to relocate from France to China than I did to relocate from France to Germany.
Like everything in Europe, on paper it’s good, in reality, it’s often mediocre. Sad thing.