Hello Rajib

First you must qualify class xii with good score this time.  You can give class improvement exam  or join open university like  NIOS . Obtain  good score  . Your mandatory subjects must be physics , chemistry  biology and English.

After that you can apply for mbbs in russia.

Russian universities  provide best facilities for all medical aspirants. The country is very liberal that it allows students without IELTS and TOEFL.

Duration of the mbbs Course in russia is 5 years.

Eligibility- minimum 50% marks in physics. Chemistry and biology. The candidate must appear for neetug and qualify it.

Mbbs fees in russia  - 4000 to 7000 USD per month.

Hostel fees - 200 to 260 USD per month

Medium of instruction - Russian or English.

Top medical university - Kazan state medical university

NMC and WHO approved.

For more infirmation please refer to the link given below

https://studyabroad.careers360.com/articles/study-medicine-in-russia