They are not playing good in LaLiga also.
it's difficult for atletico madrid to beat inter after they lost 1-0 in the 1st leg, inter is a very careful team, and their defense is very good, especially as martinez is also in good condition to keep scoring goals
on all the football prediction sites that i have seen, the chance of inter winning this match reaches 40% even though atletico madrid is the host
However, I wouldn't use the performance of clubs in their local leagues to judge the outcome of UCL matches, but I don't think that Atletico will survive in this round, because if they were unable to score Cadiz how will it be possible for them to score Inter that is much more stronger than Cadiz. I do3know what has made Atletico to decline in performance recently.
It's definitely hard to see how Atletico Madrid would beat Inter Milan, but it is still only one goal that sets Inter apart from them. And it is a home game, so I wouldn't write them off yet. Atletico has had spectacular games in the past in the Champions League, but I agree that this loss against Cadiz was rough. It's certainly no boost to their self-confidence and losing against a team that is fighting against relegation is a real bummer. Looking at the stats I think this was one of the poorest games Atletico Madrid has played this season. On the other hand, Inter Milan keeps performing without any problems.