First, I've been hearing it all my life. More often after 2014, and very often since 2022. In 2022, it was "russia has days left of reserves".
Second, nationalism was always (since 1300s?) strong in there. It always united russians against the enemy even if they hated the goverment. That's why every incrusion attempt always failed.
We need to keep applying pressure until something breaks. There's a constant refrain of "Sanctions don't work. Please stop the sanctions." from the Kremlin.
Examples? All I can see is majority of russians living their life as usual. Sure some transplants in Moscow are sad that their consumarism routine got distracted, but that is it.
As for money frozen in EU, IIRC most of it aren't realted to the goverment and just happened to be in trasit when sanctions started.
Every oligarch knows that Putin is the hand that feeds and biting it at best gets you in prison at worst an express descend to the ground.
but sanctions clearly destroyed Syria.