To piggyback on @Syntha, the point of sanctions is to create an extreme economic cost to a state as a bargaining chip. Stop doing the thing we don’t like and you get your trade back. Unfortunately, states control the national currency (most of the time), which means anyone who uses that currency also gets hit. There is no way around that.
Politically speaking, a majority of Russians have been utterly disenfranchised from politics, repeating the refrain “I’m not political” like it’s a magic spell that will ward off the consequences of their government. Consequently I’m not that sad about them experiencing a bit of economic hardship. Maybe it’ll help them realize that politics isn’t just for politicians.