How significant is Europe's influence in discussions about Ukraine?

Europe appears to have minimal influence in matters concerning Ukraine despite being directly affected by the conflict. With dwindling armed forces and heavy dependency on American leadership and security support, European nations have seemingly accepted they cannot effectively help Ukraine without US backing. The sidelining of Europe in these discussions by Washington demonstrates the power dynamics at play, where critical decisions are being made primarily between Russia and the US. This raises important questions about whether European criticism of this arrangement truly matters in shaping outcomes for Ukraine's future.