You’re missing airborne troops that aren’t included in the ground forces. The Russians separate them out into their own service branch (VDV) like the U.S. does the marines. They’re actually kind of an analogous branch to the American marines - slightly superior to elite assault infantry (they have their own airborne Spetsnaz brigade as well as more standard units). They have a much smaller percentage of conscripts compared to the regular army, mostly they are contract personnel. During the Afghan war the Afghans considered Russian regulars (heavily conscripted) to be pretty piss-poor, but had considerably more respect for the airborne and Spetsnaz units.
Although listed strength is 45,000, there are indications that the Russians have been concentrating on beefing up that service the last few years, so 50-60,000 might be more accurate. Plus there is the direct analog to the marines which also aren’t part of the army or the VDV - the naval infantry which answer to the navy (VMF) and add a listed strength of 12,000.
Still, even then we’re still only talking ~350,000 service troops. If accurate those losses are really serious regardless.