Hello student,

If you forgot to lock your choice. It'll be automatically saved once the deadline is over. The chances of getting admission is difficult to predict. It depends upon a lot of factors such as the exam pattern, the number of students appeared, the number of students qualified, whether you belong to any category or not. Here you haven't mentioned the category you belong to and your state, so it's difficult to predict exact possibilities of admission.

However, you can check the link mentioned below to get an idea

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Hope it helps