To be honest with you, this isn't the win russia claims it is. Denmark has gas too which it can pump to Germany and the Scandinavian states and the remainder of Europe will likely be supplied by the Gulf States via a pipeline through Turkey.Well my point is that the US led sanctions were supposed to break Russia and make the Ruble worthless. In that regard they failed, especially since the sanctions have now caused energy prices to skyrocket at a time when the global economy is vulnerable after Covid.
Think about it, if Iran could survive the sanctions and is now selling just as much oil as before the sanctions, what could make anyone think that they could cripple Russia ? Russia is a massive country with limitless resources at their disposal.
In time, they'll even make a shift towards nuclear energy and in the end, russia will be left with only one significant client for energy - china. They'll make up the volume of russian gas trade but at heavy discounts and it won't fill the void Europe left.
No, what will hurt russia more in the short-term is the exodus of technological companies and ban of exports of electronic components to russia. China will be their hub of acquisition for the aforementioned but even it will restrict sales as much as possible because it doesn't want to get sanctioned as well for selling contraband to Moscow. However, after the war has ended, they'll probably chalk out an alternate route/compromise.