They can make it harder and slow it down and that is having effects. Russia energy sector is contracting this year, no matter what anyone says to the contrary.===
No it is not. Simply selling to western countries switched to the middlemen. And also Russia began to sell a lot of gas and diesel instead of crude oil.
So Russia turns to process her natresouces which she had been selling to Europe. And in Europe the plants who before processed Russian resource began to close.
For example BASF closes her fertilizer plants.
https://fortune.com/2022/10/25/basf-russia-gas-ukraine-europe-energy-crisis/