As a reminder: Russia gave Ukraine tutorial level war from 2014 to 2022, allowing them to fix many problems in armed forces. Resulting in 2022 being far less lopsided than it would be with Russia attempting the same in 2014 or 2015 or 2016 or 2017 or 2018 or 2019 or 2020 or 2021.

Why you would assume that Russian strategy is optimal?