russia hs more than four times the population but they are having to use stacks of mercenaries and recruiting for soldiers globally Ukraine are still avoiding recruiting those under 26 - it is a concern but you overstate it and make it sound like it isn't a concern for rusia as well , when it is
the other thing is that with less weaponry that puts more pressure on the men to do the heavy lifting in battle better supply of weaponry does ease the load on the personnel
the third thing is technology ......this gets a little bit into crystal ball gazing but we have seen technology already impact both need for personnel + the type of job personnel actually do ...we can realisticaly expect this to continue . An example is the AI drones Ukraine are wroking on . But launching a drone is less risky and less arduous (and easier to recruit for ) than manning a trench and the pay-off from that can be quite high .
