It will be difficult for Chelsea to qualify for any European competitions this season, Chelsea's inconsistency will not allow them to gather enough points that will qualify Chelsea for any of the European competitions next season. Chelsea should focus on winning their matches so that they will not be relegated this season, next season they can challenge for the title or qualify for the uefa champions league.
Lol the first part of your post is ok, it is true that Chelsea has no reason to believe they could have a chance to qualify for any of the European competitions. But why should Chelsea be concerned about getting relegated? Like, what are the indicators as of now in the table that you see as being a threat for Chelsea to be relegated by the end of the season? I think every single post should have a least amount of substance and effort put into it. That's why I would kindly ask you to provide the substance for the idea that Chelsea should put the whole focus on not being relegated.
So far their position is safe enough to stay in the Premier League, because their position with the team in the relegation zone is 13 points away. But with the remaining matches available and if they continue to achieve bad results, then the threat will remain, I say this based on the possibility that will still happen.
They have just won 2 consecutive wins and that is good news for them because it will indirectly grow their confidence. But considering their habits are still far from consistent, they could have another unsatisfactory result in the next match. Actually this is the problem with them, sometimes they play well, sometimes bad and even very bad.