"Piece talks between Russia and Ukraine" is something that Russian backed right wingers love to talk about. The only thing that they don't mention is at what cost to Ukraine.
It's a common talking point in my home country that Ukraine and Russia should stop fighting immediately and have peace talks.
But when Russia occupies parts of Ukraine they won't say "yeah, sorry, my bad, we'll leave", they'll want to enforce their demands, which will most likely be territories and/or installing a Russian puppet government.
The problem is not peace talks but doing it right now. Ukraine will have to at least push them back and weaken them first.
It's not a good precedent to let major powers invade their neighbors and be able to immediately get what they want.