As it is currently, 1 looks more likely unless something significant happens. As long as civilian casualties are minimized, I don't Ukraine is getting helped beyond weapon donations.
As for 2, you are implying that Europe helps by sending troops? I don't think that will happen without NATO getting involved. No European country will take a unilateral decision to send troops to Ukraine.
By #2, I actually considered a NATO operation. The shortcut was a bit abusive, I agree.
Concerning #1, it may take time and there, civilians will pay a high price. However, they already do in particular as they are shelled regardless of what they do by Russians. So... there is nothing looking bright through the window...