Hello there,
The only reason you have not got any prediction of colleges may be because of your low marks. You have not mentioned the name of the examination. Now you have two options. You can either drop an year and prepare for the next year. Another option is that you get admission in some other courses. You can try BSc courses which gives you admission on the basis of your 10+2 level marks. You may also try the Management Quota present in some private colleges, but the fees is too high. If you don't want to drop an year and also afford the fees then you can go for the Management Quota in various colleges. Else it's better if you utilise this year preparing for the next exam and get good rank.
In case you have scored good rank, but still you are not getting any predictions then let us know in the comment section. We will try to fix the problem, if any.
Hope this information helps you.
Good luck!!