Stagnant wet soil will always fuck shit up. Bugs,mold,bad bacteria, etc. Plethora of problems will occur in this situation....
My honest suggestion....you want to learn from your mistakes?
Repot into fresh good bag soil. Looks to be a 7gal pot at minumum might be 10....get a 1.5 cu foot bag of
fox farm or comparable soil and a small bag of perlite. Put it together and bam!! Roll that pot with plant in it on its side. Rolling back and fourth while holding the msin stalk of the plant the soil should loosly fall out. Roll till it all comes out. Smell the root mass and soil. If it smells earthy your fine to repot!
If it smells bad throw it...again following the steps above and others if they chime in can save your plant. Your call hope it works out