Neither France nor Britain were gracious in victory. As Lloyd George said, this isn’t a peace treaty it’s a twenty year truce.
Both France and Britain were bled out of a generation of youth. In Britain it meant the end of the landed gentry. So many died, that a part of the British landscape, the country gentleman could no longer be sustained.
Politics can be brutal, all the wrong views of The Congress of Vienna, were put into effect, ignoring that it gave Europe a century of peace.