AH AH — manager of Atlético Kolkata. Named in honour of my hometown club, Atlético de Kolkata, which won the inaugural edition of Indian Super League in 2014.
A good defence is the best offense.
You have already know how to build good team. Probably your team can win in league if it is even tougher.
Make the team tough to be defeated. Give a hard time to opponent even if your team is defeated. When facing bad form, don't give up but try to make changes to stop it Avoiding making silly mistakes like forgetting restoring morale or conditions throughout a season.
The statistics of T11 lacks average match ratings of players. It is difficult for understanding performance trends of players. If possible, keeping a record of performances of your players. This greatly help.
Using a consistent lineup can really can help maintaining consistency of performances. I don't like but have to acknowledge that my team more likely win a league if it is not eligible to participate CL, because there are less days with 2 matches per day and need squad rotation.
I don't think I can give you much useful advice. But I hope to remind you that many things is possible even if it is looked unlikely. In last season, when my L31 team fell to 11th in league, it was in bad form and I wondered if it would finally fail to promote. Then it completed the final 15 matches with 13W-1D-1L and comfortably won the league champion. In this season, my level 32 team performed even worse and fell down to 12th at one point. Now some problems have been fixed. It is in good form again. I hope miracle will also happen again.