According to minusrus they’ve lost 7193 tanks out of 3300 Russia had before the war started. I sincerely hope that the article is correct, but so far they’ve been able to replace lost hardware with a decent rate with manufacturing and presumably purchasing from their allies.
One can hope that the current massive attack ends with the Swan Lake on Russian tv’s, but right now I’m more worried if Ukraine can hold the lines long enough for that to happen. They really need reinforcements, it’s pretty difficult to fight a war without ammunition.