M.Com

Yes, there is no such restriction so you can do M.Com also along with your CA. However, M.Com does not have any advantage neither for any job in the corporate nor for any value addition on your CA exam. Mostly M.Com is done by those who want to make a career in teaching only.

M.Com's faculty also very experienced. You can go with M.Com in ABBS.

Sorry friend but your score is a bit low to be eligible for admission. However, there are some chances that you may secure admission in later phases when competition becomes lower. Best of luck!

The more you study, more opportunities will rise eventually and more successful you will be.
But with all this, career skills can be improved by giving emphasis on:
-Communication skills (Listening, writing and speaking).
-Adaptability to difficult situations.
-Researching on fresh topics related to your field.
-Tactfulness
-How comfortable and the meaningfully you represent or put your point, etc.
Good luck!

You can go for a full time job in various organizations. May be, entry level jobs will be based on your profile.

Yes, you can pursue CA programme, but according to me that will not a wise decision in term of total duration of programme is 3-4 years and you have to give full attention and time too for study to crack the exam.
In other case you can plan for MBA-finance that will be complete in next 2 years from good b-school and you can see your career with good growth and salary too.
Rest you can decide according to your career aim or interest.