Recently, Russia has markedly reduced gas sold to European nations in their gas pipelines. This seems very strange to me. In my opinion, the only two logical amounts of gas to sell would be "as much as possible" (if they want to sell gas) or "none at all" (if they don't want to sell gas).
One possible explanation could be that since western technology is no longer sold to Russia, that they have difficulties in gas production or transportation in pipelines. That's the excuse they have been using, that they can't sell full amount due to not getting a turbine repaired in the west. However, most western news sources point out that this is not the true reason but rather an excuse.
I have a theory: since most western companies have made the decision to sell no products at all to Russia, that Russia doesn't need as much foreign currency anymore. They still have some small opportunities to buy products from the west, but the opportunities are much smaller than before the war. Hence, Russia needs only part of the foreign currency they used to need, and to get that foreign currency, they sell only part of the gas they can.
Is this theory plausible? Could it be the real reason why Russia is still selling minor amounts of gas to Europe?