Hello aspirant

hope you are doing great. As per your query  I would glad to tell you that it is very difficult to predict the odds of getting government colleges on the basis of marks because for every rank marks varies every year due to variation in number of appearing , difficulty level of exam and number of students registered for exam . Following is the link of cut off for your reference:-

https://medicine.careers360.com/articles/neet-cut-off

Hope you found this answer helpful. Good luck for your future