The source you cite lists 103 nations as less corrupt than Ukraine and only 76 measurably more corrupt. Ukraine is far below average.
Taking measures is not equivalent to making gains. Reality is reality, no matter what level of optimism you have.
Why trust your out of date sources instead of recent headlines regarding corruption amidst a reconstruction estimated at almost half a trillion dollars?
https://www.yahoo.com/news/corruption-overshadows-ukraines-multi-billion-064357386.html
Thanks O'Biden!