Yes but much of Russia’s exports are commodities, which are traded on a global market. If Russia loses Europe, they can find other buyers. They may have to adjust the price, but they will still be able to sell to somebody.

It’s different from China which is exporting far more finished goods. If America stops buying high end electronics from Chinese factories and starts buying from Vietnamese factories, then those exports just vanish from China’s economy. There is no backup America to buy the goods to keep the factories running.