Barcelona is currently unpredictable and inconsistent. It will be very risky to bet on Barcelona, because they don't have that strength that they started this season with. Atletico Madrid is consistent and very strong which gives them a good hedge over Barcelona. If Barcelona lose this match, it means that they might drop to the thrid position on the table.
I still don't understand what is happening to Barcelona, they are superior against the strong teams, Bayern Munich, Real Madrid and Dortmund have been their victims this season, but they are weak against the small teams. Facing Atletico is a tough challenge for Barcelona, they are certain to be without Lamine Yamal who suffered a right ankle injury against Leganes. Lewandowski also appeared limp when his team lost to Leganes, this condition is very disadvantageous when facing Atletico who have won 6 consecutive games in La Liga.