Maybe some of the factors that made Barcelona look so weak in their last match were due to fatigue which caused the team's performance to decline slightly. Facing Atletico Madrid will certainly be a little more difficult without Lamine Yamal and may force Barcelona to appear more careful. Atletico Madrid are on a positive trend so facing them in their current condition will be a big challenge. Barcelona must win the match if they want to stay in first place in the standings, but if you look at the opportunities, maybe a draw is much more likely to happen because Atletico Madrid are also in a fairly favorable condition.
Atletico Madrid is certainly not an easy opponent to beat, even though Barcelona is currently performing brilliantly, it will not be easy for them to score a goal against Atletico Madrid, with their previous unbeaten match, it is true what you said, they are also in good form so it will not be easy to beat them because they are experiencing better improvements, I think Barcelona could lose against Atletico Madrid in the upcoming match, especially with the absence of one of their key attacking players who plays a fairly important role. Atletico Madrid is a threat to Barcelona because their ranking could be shifted if they fail to win their match later, most likely what could happen is that they will have difficulty winning even though Barcelona has a greater chance of winning.