It's been a year, so I don't think we can assume that there are no shortages just because Russia seems to be doing fine on the surface.
Some of these sanctions will have an impact in 2 years, some will in 5, but they will eventually.
I'll give you some examples. First of all, Russia lost a lot of its military power and it doesn't have a way to rebuild it. Sure, some of it was old soviet-era tanks, but when you're fighting on your own land at the very least you can get scrap from lost vehicles, you can strip them from whatever is left. Russian scrap is in Ukraine now, they won't even be able to turn it back to raw metals, not to mention the vehicles and weapons that were in good shape, that the Ukrainians are repairing. Russia was building and maintaining this force since the 70s and most of it is gone forever.
Another problem is emigration. Many Russians moved in fear of conscription. These were often educated young people who would otherwise be earning money and paying taxes. This is not something with immediate impact that can be measured after a year.
As far as shortages go, the main problem is electronics, chips, technical support for machines. The whole industry relies on specialized machinery like CNC, laser and plasma cutters, computers. They are going to have a huge shortage of that. Another problem is going to be with already installed critical systems that they were getting from the West, like AC systems, industrial coolers, car control units (ECU and such). They may still be getting some car parts but the problem will be with electronics, especially for German cars which are popular among wealthy Russians.
For now they still have a lot of used car parts they can keep ripping out of scrapped cars and renewing, but after some time they'll be back to doing it on milling machines from the 70s and 80s, or they'll all drive Ladas.
Russia's always been great at rewriting history.
They attacked Poland, then came back as liberators. They were so worried about how the nation might remember them, that they kept a large army in Poland up until 1993 (!). They were basically occupying the country for 50 years building statues of communist leaders and naming the streets after communist leaders and the Red Army.