absolutely. Lets not forget russia has allies with weapons too.
You seem to forget Russia is not Israel. They are fighting a war of attrition in Unkraine, not annihilation.
Israel uses more munitions than they could ever create, draining the global supply. Russia is being tactical in Ukraine because unlike Israel, they realize even if they win, they will have millions of Ukranian neighbors and they probably shouldnt murder their families and level entire cities.
You also aren't accounting for technology. Russia gives pretty subpar stuff to syria, lebanon, etc. Now they might decide to unload a bunch of hypersonics and anti-air tech.
No one has tried to invade Russia in 70 years for a reason, and it ain't nukes.