Hello

Well as you haven't mentioned your state its quite difficult to know whether you'll get BDS in private college or not.

Your marks are too low for any good private bds colleges though but surely you can try.

Colleges can't be predicted this easily as cut offs change every year and there are various aspects related to that like---

1. No. of candidates

2. Demand for that particular college or university amongst the candidate

3. Level of exam

4. No. of seats etc.

But don't worry

You can still get an idea about your rank , college you may get through these link----

Also, you can checkout previous year cut offs in order to obtain more specific information

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