Europe has 15x the GDP of Russia. If they were "hell bent" on militarily defeating Russia, they could have made even tiny sacrifices to the social welfare system, diverted industrial production to military aid, and drowned Ukraine in help. That was a very achievable goal, and they didn't do it.
Instead, the vacillated on importing US natural gas, continued shutting down nuclear power plants, and paid Russia MORE CASH FOR OIL than they ended up giving Ukraine in military aid! They did not in fact, dedicate themselves to this war in any way shape or form.