If that's what you're hoping for, Ukraine is very grateful for volunteers. There's a bunch of Swedes who did go there to fight. There's a bunch who are there right now.
Or is it "somebody else" who has to show a backbone and take action?
You are right that there are more ways to support. But demanding or asking that somebody else does something is not doing something. A majority of the population consider themselves to be great heroes for making symbolic gestures or for telling their friends over coffee or drinks that "somebody really should do something".
But reality is reality and they have done nothing. They will never do anything voluntarily either – for any cause.
I understand. But I don't know if there's been any lacking in condemnation on his part. As far as I remember, most leaders of nations have condemned the war completely since day one. What do you wish for him to achieve by condemning it harder?