Russia's current trade surplus is a actually sign of weakness because it is caused by a collapse in imports.
These are critical to the entire Russian manufacturing capacity, especially in terms of arms, which are already substandard.
They can sell oil but can't build anything... especially involving high tech.
THAT is a recipe for long term economic collapse, especially as the world moves away from fossil fuels.
Link: http://www.tribune242.com/news/2022/may/26/stateside-effect-wests-sanctions-russia/?opinion