Britannica
> sovereignty, in political theory, the ultimate overseer, or authority, in the decision-making process of the state and in the maintenance of order.
Merriam-Webster
> a: supreme power especially over a body politic
> b: freedom from external control : autonomy
> c: controlling influence
Wikipedia
> Sovereignty can generally be defined as supreme authority.[1][2][3] Sovereignty entails hierarchy within a state as well as external autonomy for states.[4] In any state, sovereignty is assigned to the person, body or institution that has the ultimate authority over other people and to change existing laws.
None of these match Germany. Maybe you have your own one that does, and I'm fine with that.
EU law isn't above national law. Yes as a member each country has to implement EU laws if they want to be a member, but they're also free to just leave.
That's like saying you're not free after you've entered a shopping mall and have to obey their house rules.
Merriam-Webster > a: supreme power especially over a body politic > b: freedom from external control : autonomy > c: controlling influence
Wikipedia > Sovereignty can generally be defined as supreme authority.[1][2][3] Sovereignty entails hierarchy within a state as well as external autonomy for states.[4] In any state, sovereignty is assigned to the person, body or institution that has the ultimate authority over other people and to change existing laws.
None of these match Germany. Maybe you have your own one that does, and I'm fine with that.