First, it's Putin, not Russia. Second, he's not itching to use tactical nukes as that will show his hand and there's a good chance that some of their nukes won't work as advertised due to corruption throughout all their systems.
What Putin enjoys doing is threatening to use tactical nukes in the hope that no-one calls his bluff.
Russia has been itching to use tactical nukes. If America makes two, that’s the future.