It is quite funny to hear about “self-sufficiency” of Russia, if you are interested in facts instead of reading propaganda
After the sanctions imposed after Russia's full-scale terrorist aggression against Ukraine, we have easily verifiable facts:
1. The “Second Army of the World” - not only failed to fulfill its tasks, but also lost part of the territory of Russia (Kursk People's Republic).
2. The “most powerful economy” and the military-industrial complex of Russia is unable to provide its terrorist army, neither quantitatively nor technologically - begging from rogue countries like Iran (UAVs, missiles, etc.), North Korea (shells, mines, manpower), ....
3. the myth of “unparalleled armaments” burst like a soap bubble - C300/C400, Armata tank, Su-57 - all these proved incapable of countering Western weapons of the 1970s.
4. Population decline has reached previously unprecedented levels, causing huge problems in the labor market. The demographic problem became almost the number 1 problem.
5. “War economy” destroys the financial system and leads to mass impoverishment of people. Here I will pay special attention - study what “war economy” is and why the GDP of “war economy” is a “hollow sound”
6. Ministry of Economy raises the interest rate “to the sky”.
7. Gazprom is on the verge of bankruptcy, and for the second year is claiming previously unseen losses....
8. According to the results of the first half of 2024, 4363 legal entities were recognized bankrupt in the Russian Federation. This is 40% more than in the same period of 2023.
9. Most key indicators of the economy - classified and no longer published in open sources.
10. “High-tech” Russian companies, left without Western components and technologies, are trying by all unthinkable means to import at least some equipment into the country, since Russia itself does not produce even 1% of the necessary high-tech elements. For example, Skolkovo (the “flagship of technology”) filed a bankruptcy suit in the Arbitration Court of Moscow. The pathetic parody of processors “Baikal” did not pass the state commission, and most (even state companies) refused to realize anything significant on it.....
You can go on listing “successes of the Russian economy” for a long time

And all this as a consequence of the attack on small Ukraine - a small (compared to Russia) country, without nuclear weapons, a huge army, and “the strongest economy”, without 40% of the world's natural resources.
And as a result, even yesterday the country that had potential and importance on the world stage is today a criminal country, a pariah country, and.... a raw material, submissive, appendage of China and India, actually giving them oil for free
For general education - the louder the propaganda screams that “everything is fine”, the worse the situation really is, learn history

And IM question to finish - if sanctions do not bring any noticeable damage to Russia - why Putin (international criminal) and all his entourage, at the first opportunity nags to cancel sanctions ? If there is no harm from them ?
PS I'll warn you right away - my relatives live in Russia, I know about the real situation firsthand, from people living there. The city is not Moscow, but it is one of the largest cities in Russia.