The only way for these killings to stop is a ceasefire or making peace. Russia hasn't achieved their objectives yet, so I don't see any possibility of a csasfire right now. Same goes for peace, Russia wants to fight for the east of Ukraine and the Ukrainians will not give up any land. At the moment an end of the war seems very unlikely to me.
Western countries have already done a lot for Ukraine, there are large weapon deliveries for Ukraine from all around the world. It seems now that Ukraine is fighting with much more modern weapons than Russia. And without these weapons Ukraine probably wouldn't be able to hold against Russia. So the only option the West has is to increase sanctions and increase weapon deliveries.
The longer the war the harder it will be for Putin, if he can't show any victories. Taking more land in the east would give him a stronger hand in the negotiations. I don't see any quick ending of the war. This could likely go on for the next months.
I can understand Ukrainians, they are getting attacked and another nation wants a piece of land from them and that is why they are trying to not stop it. However, I do not get Russia, you tried, you failed, you could try again and fail again and you could keep trying until you succeed but do they really think that it worths it?
I mean tens of thousands of dead, with billions in lost equipment and whatever they have, all for just piece of land, plus all the future money lost because now people will be looking for alternative ways to live without needing energy from them as well. They lost so much just to win so little, makes no sense to me at all.