Its not that easy,Trump sees it as a business opportunity which is not how geopolitics works.
For Ukraine it is existential to get the territories back,fo Russia to keep them.
So,how do you want to end it if both sides cant compromise?
Lets say Trump makes a deal with Putin,
Russia keeps all it has and the war ends.
How can Ukraine and the EU accept this?
Come up with a solution.
Simply they have to accept it because there is no way they will ever get that land back, can you seriously tell me how Ukraine is going to get that land back realistically, tell me one realistic scenario where that is possible? Its just not.
So either they stop now and try to negotiate something which means security guarantees for Ukraine, lasting peace, 0 chance Russia ever attacks Ukraine, no more war, no more hundreds and thousands of young Ukranians dying daily, no more war and suffering, no more Europe being closed off from Russia economically, or sending billions of euros away from tax payer money.
Or..... they keep going, now without any US support at all it seems, no aid, no military weapons, no intelligence nothing.. so Ukraine will keep loosing land, will keep loosing thousands and thousands of young men, generations wiped out, Europe will keep suffering economically by sending even more billions of euros away, by being completely shut from Russia and even more now if they get shut from the US
Whats better and smarter for Europe? Come now... its not that hard to figure out.