It isvery hard to understand why would someone search for career options after completing MBBS you complete MBBS you can start your own clinic or join any hospital in some of the states there is a policy of serving at least two years for government hospitals after complete and MBBS therefore there are plenty of career options whenever you get a degree into MBBS

after MBBS either you can take up the job of a medical officer and go off to some urban or semi urban as well as rural areas and serves a medical officer for treating patients on a daily basis
After few years of house relationship you can also apply for the job of demonstrators and take up medical education service under the state or central enrolled medical colleges
you can also act as a block medical officer of health community medicine officer of health
apart from that you can and most necessarily might have to need to do a post graduation for which you need to sit on the neet PG examination and after getting your master degree you can either practice, teach or going to administrative lines
and after completing your master degree you can also do a dm or mch degree if you are into general medicine, general surgery or paediatric medicine