It’s apparent the Frankenstein’s monster of a combat vehicle is even less than the sum of its crude components.
i mean the budget is not the determining factor here. The russian economy is able to support a strong military, since they have a lot of resources and can produce a lot of shit by themselves. So even if the budget is low nominally it should suffice. Also Russia had a fairly good GDP per capita, far exceeding that of Ukraine and on par with many EU countries.
The issues are corruption, nepotism, lack of career chances for dedicated people and so on.