Ukraine has absolutely failed at being Independent.
Ukraine has been independent now for 30 years. It has had in 2019 a peaceful transfer of power.
Is it corrupt? Yes, but it is improving.
Russia in contrast is corrupt and isn6improving.
Are Ukrainians Angel’s? No. But they are trying to get better.
80 years after independence the USA went into a civil war. Do you consider that meant the USA failed at being independent?