As for the oligarchs, they're still rich, but much less so, and they've lost many precious toys ( yachts, villas, football clubs).
Yes, the average Russian citizen is excluded from the rest of the world, and will bear the brunt of the impact. As they should, because they're the ones who mostly sat idly and allowed all of this to happen. I have zero sympathy for the average Russian whose inaction made them unable to purchase a new phone or car. They won't starve to death, and they won't be bombes to pieces, which are the prospects facing Ukrainian citizens suffering from the invasion which brought all of this on.