There are different ways to end the conflicts and different degrees of support possible. Some European countries were in favour of pushing for peace talks far earlier but the current Ukrainian government has complete support from the USA and territorial ambition of its own.
Belligerents are not into it out of the goodness of their heart you know. It’s not really about saving Ukrainian lives. It’s actually far from obvious that prolonging the war saves lives. But most of the EU has taken a very Atlantist position on this conflict and at this point it’s probably better to keep going and significantly neuter Russia.