Norway, the North Sea via the UK and Algeria are right there as ready suppliers. All of which today supply more than Qatar. https://www.consilium.europa.eu/en/infographics/where-does-t...
Not to mention current EU stated goals is to reduce consumption by 50% by 2030. Which is coincidentally pretty US and Russia imports combined sized, and timed pretty well with the expiration date of the EU/US trade deal.