Economic sanctions have certainly made life difficult for Putin, but they'll never work to end the war on Kyiv's terms. The only thing that will work is providing more military assistance to the Ukrainian army. The West has a moral responsibility to step up and equip Ukraine with the armaments and defenses it needs to fend off Russia once and for all.
The US's ultimate goal and reason for supporting Ukraine is to isolate and weaken Russia; NATO's expansion has always been aimed at controlling the Baltic Sea and with it Russia's means of exporting resources. Though neoconservatives have tried hard to isolate Russia completely — e.g. potentially disrupting the Nordstream pipeline — the nations of the world won't overhaul their economies just to cave to US hegemony.