Despite Ukraine's Zelenskyy putting on a brave face, the election of Trump is devastating news for his country and is a massive gift to Putin and the Kremlin. Trump's insistence that he would quickly strike a deal would likely mean that Ukraine has to hand over vast swaths of territory and that it would be non-aligned with NATO, both of which are unacceptable to its people.
Irrespective of who won the US election, Ukraine is losing the war and is now losing territory at the fastest rate of the conflict. Under the Democrats, they would have prolonged the war with more weapons, only increasing the nation's suffering. At least under Trump, there's a good chance the conflict will be brought to a close and it will stop thousands of Ukrainian soldiers from dying unnecessarily.
There's a 50% chance there will be a bilateral cease-fire or peace agreement between Russia and Ukraine by Jan. 2026, according to the Metaculus prediction community.