Liverpool's failure in the UCL seems to be a bit advantageous. This condition can make Liverpool fully concentrate on the EPL. Currently, Liverpool has a difference of 12 points with Arsenal. Although Arsenal still has a chance to continue in the UCL, it will make Arsenal a little more tired. So Liverpool should be the best candidate for the EPL champion this season. As for Aston Villa, they seem unable to compete well in the EPL. They are out of the top 5 warnings right now.
It’s not a good thing but at least it is as you said, they will now be able to focus on the premier league and try to win the league this season. It is unfortunate, they dreamed of winning the treble this season but in just about a week their dream shattered after being eliminated in two competitions leaving them with only the premier league to win.
12 points gap is enough for them to win the league so I don’t think Arsenal have any chance of turning things around but that doesn’t mean Liverpool should be relaxed. This is the time that they have to focus more because there is only a few games to play. The competition is now entering the most intense and interesting phase where even relegation zone teams will become difficult to beat.