Warm wishes for your upcoming journey , but considering the ongoing trends of admission , it is somewhat difficult for you to get admission in the best colleges , however you can try for some colleges in mumbai like :

Viva College , Virar

B.K Birla College of Arts and Commerce

St. Xavier's College , Mumbai

Jai Hind College, Mumbai

You will get detailed information by clicking on this link

https://university.careers360.com/colleges/list-of-bcom-degree-colleges-in-mumbai

So keep on trying and good luck !!