I also doubt Barcelona can catch up with Real Madrid's 7-point deficit, although Barcelona is also currently showing improvement after previously experiencing a bad phase and they are also appearing confident in the UCL league. However, with a 7-point gap from Real Madrid, it seems difficult for Barcelona, especially since Real Madrid is currently showing its true strength where the front line has started to become sharp and previously Real Madrid had weaknesses in the defense line but with the return of Alaba it will certainly help the defense become stronger again.
Barcelona still have a lot to do before they can arch up the Real Madrid from the top of standing, there gap point against Real Madrid is almost which show that Real Madrid is more stronger than Barcelona; and with the way the is going in currently now know any team will like to drop point for now: that’s why even the Real Madrid are try to package there self in the top of the table.
Yes you are right barcelona is far away from real madrid they can't catch them. The points gap are too huge even if real madrid have failed to win against Atlatico Madrid, Still there will be a difference of 7 points between these two rivals, Even let suppose if real madrid loses back to back matches, then still I believe barcelona can't stop them from winning current season league and that's why Real Madrid is a strong candidate to win La Liga this season. Barcelona could not hold the 1st place at early stage of the season due to thier instability although their attack are too good at this season. By the way compared to league barcelona is performing well in UCL, so that's why maybe barcelona will win UCL. But there is still plenty of time left to be UCL dominater, while la liga has already been claimed by madrid.