Well yeah, obviously! Ukraine was (and is) one of the poorest countries in Europe. But if you look at Russia having a huge military and billions and billions more in military spending didn't help them. In the first months of the war Ukraine had not a lot of foreign equipment and they still held their own.

What I try to say: Ukraine is fighting for it's very existence and I think that alone is the main factor why they are so good on the battlefield compared to Russia!