In my opinion, PSG inability to compete in the Champions League is due to not getting equal opponents in the domestic league, they look strong in Ligue 1, but have difficulty competing when in a different atmosphere. PSG chances of qualifying through the play-offs depend on the remaining 2 games, they must rely on themselves to continue to survive. Luis Enrique presence has not helped much to boost the team's performance, it seems that PSG needs to be more active in the transfer market to increase its strength.
The two more matches in the UCL will also not be easy enough for PSG because PSG will face Manchester City even though Manchester City itself is also in a bad phase lately in any competition. But because the next match in the UCL will take place at the end of January, of course each team will have time to make changes, especially in getting some of their best players through the transfer market so PSG and City will definitely try to see good opportunities through the transfer market this time because both teams are struggling to qualify for the playoffs in the UCL this season.
Now we have nearly six weeks break in UEFA Champions League which can bring many changes in few teams and with this few teams could be better and few surely going to have decline into their performance currently we have both PSG and Manchester City in trouble with most chances one team will be out of the knockout stage because after checking table I have strong feeling just two teams are having problems to go out of this competition and match between PSG vs Manchester City is going to be very interesting for both teams if they want to go through they have to win this.
PSG needs to fix their problems for having better results in Champions League because their position in Ligue 1 is strong for staying at the top no team is going to create problems for them while they need to improve their attack which is not good as they have in the past.