hi,

repeat of exams is not a good option since every time syllabus has changes and now for corona pandemic admission in ug courses has delayed.

see you have successfully completed your 12th but marks is quite low, but since most of the government and private company asked for atleast 60% marks in 12th course, that makes you eligible to apply for many of the exams, so I suggest you to choose courses as per your criteria , you did not mention your stream in 12th exam, for any more query you may ask in comment section.