Did you somehow forget about the 3 years+ that Russia has been bombing Ukrainian cities?
Nope, have perfectly good memories of that.
You seem to not grasp that the Ukraine is losing and they need to cut a peace agreement on the best terms that they can muster ASAP because their negotiating position gets worse on a daily basis.
Who is to blame and who did what to who in the past is not relevant - all that is relevant is how to respond to the difficult situation the the Ukraine finds itself in at this moment
Instead of embracing peace negotiations , Zelensky and his foreign backers do everything they can to derail any peace talks and to goad Russia into attacks.
Except that they are not. They have held the line for over two years with the Russians obtaining only limited success after the first onrush of the invasion. You also are ignoring Russia's "peace" terms. They go way beyond just holding on to the land already conquered. Russia is demanding what would be nothing less than total surrender. Russia has given Ukraine only two choices: fight on or surrender and the loss of the independence of their country.