Sanctions have worked to an extent, but I don't believe sanctions can make Russia stop the war. This looks like a war in that the ego plays a very big role. Neither Russia nor Ukraine nor NATO would want to agree that they've been defeated.
Without the sanctions, Russia would have been able to do more harm to its enemies through economic means and otherwise. At this point, they're just looking for ways to survive whatever sanction that gets thrown at them and they've been managing well so far.
You have a raised valid concerns regarding limitations of economic sanctions in achieving desired outcomes. Economic sanctions may initially produce some results , but later targeted countries devise strategies to mitigate their impact on their economies overtime, and same thing is happening in Russia Ukraine conflict now.
The Russia Ukraine ongoing conflict has led to heavy human causalities, collateral damage and economic difficulties all over the world. We should raise our voices to exert pressure on political leaders to find effective ways to bring this devastating conflict to an end.
There is no conflict between Ukraine and Russia. Russia made a military invasion of Ukraine in order to seize its territory and destroy the independence of this state. This is the most ordinary aggressive and large -scale war, in which hundreds of thousands of people from both sides die. Therefore, it is necessary not to exert pressure on the "political leaders", but specifically to Putin and his environment, so that he would withdraw his occupation troops from Ukraine. And for this it is necessary to use all funds - from sanctions, diplomatic efforts to destroy the invading Russian soldiers by providing all kinds of assistance to Ukraine to reflect Russian aggression.
Sanctions cannot work effectively in a short time, but they slowly and confidently give their destructive effect for the Russian economy. Russia has vast territories and in this regard, large available reserves. But when they run out, it will be very difficult to raise the economy. Most likely, through internal conflicts as the consequences of this war, Russia will fall into many independent states. This will be a clear lesson for those authoritarian states that are now observing the progress of this war.