There are suspicions that Russia might fight back by shutting gas supply to the West. Some sources confirmed that the US is already in talks with Qatar to become Russia’s substitute.
But Qatar and other oil and gas producing nations confirmed that they will not be able to provide substantial amounts of gas to replace Russia’s supply.
African countries have been tipped as the best option because the continent has some of the world’s deepest gas reserves. But Africa might not replace Russia because of insecurity and lack of infrastructures.
Who will replace Russia?
https://www.aljazeera.com/economy/2022/3/1/analysis-can-african-gas-replace-russian-supplies-to-europeI don't think anyone can. Europe is doomed imo. They'll probably try to get their gas from USA by ships and from other smaller ME countries but like you said it is not going to be enough. Also the US has its own problems and they'll probably stop giving gas/oil to Europe at some point because the prices are also climbing up there.