Surely nobody promised you that sanctions would not have any ill effects on the general population? There is no way to seize Putins war chest directly, so the purpose of the sanctions is to hit him and his power structure indirectly through the entire Russian economy and society. It is an extremely crude weapon and hits Putin critics just as hard as Putin supporters, and as always the weakest suffers the most. But what is the alternative? Doing nothing or just applying mild sanctions have been tried - it just embolded Russia and let to current murder of Ukraine. Do you have a better idea?
This shit isn't even targeted at the oligarchs, only Russian people