Russia has fought many wars on its own land against invaders and defeated them all. Napoleon (France), Charles (Sweden), Crimean War (England), Hitler (Germany), Obama/Biden/Trump (United States of America).
The United States of America has only fought wars in lands it invaded.
This is why The United States of America is losing its war against Russia in Ukraine.
Throughout history, everyone has wanted a piece of the largest land in the world, and lost.