I dont know the fine details of what happens over a long length of time after they are conscripted.
Even if volunteers are very highly paid, many seem to be going on near suicide missions to the front line. It makes me think how anyone could volunteer for almost suicidal missions on the front line. What about the barrier troops to stop them going back to their lines?
There is two types of military service in Russia, the professional contract soldier that signs up for service for a number of years. Then there is the conscript service of 12 months, that every 18-30 year old male is legally meant to serve, unless they have a good reason. The latter group are banned from taking part in the SMO, they serve in military unit throughout the Russian federation.
You say suicide missions, yes some of the footage is terrible, it is a trope that Russia is like WW2 Red army, and is recklessly throwing away the lives of it's troops, if this was the case, Russia would be on the Dniper and in Odessa already, one of the reasons that this war has gone on for 4 years, is that the Donbass defensive fortress lines had been built up since 2015 by Ukraine, and Russia rather than doing a frontal assault (which western media says they do) have instead slowly but methodically ground down Ukrainian defences, and disrupted logistics and reinforcements to the front. Barrier troops, not heard of Russia using them tbf, but I have heard reports that Ukraine employs them, they are usually from units of nationalists that are extremely idealogical.
If you want to get a understanding of what is going on in the battlefield watch the Military Summary channel
External Link/Members Only he updates daily.