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.