Hello aspirant, 

If you are interested in a government medical college in Karnataka. Then yes you have decent chances. 

If you try under state quota, yes you have very certain chances. But as you mentioned that you aren't eligible for any state quota you still have chances of getting a government seat in Karnataka. 

Here look after last year's scores in the link below and choose your options wisely. 

https://medicine.careers360.com/articles/neet-cutoff-karnataka

Also try applying for both all India and state quota counselling. 

Thank you