Its all about the sanctions, the west don't want them paying their debt and sanctions have made sure that happens.
The financial consequences means they are now a high risk so any lending they now access in the future comes with a much higher interest rate.
At home this is a disaster as their finanial system will now spirral downwards quicker than it was.
The Ruble is worthless anywhere but Russia and that too will now be put under severe pressure.
Their ecomomy will collapse soon and either their is either revolution or nukes will fly. Russia is now the rat trapped in the corner