Hi dear,

You have got 66.16 percentile in JEE main that means your rank should be around 294072. Your rank may vary if number of student in April month exam will increase. You can also calculate your rank as

Rank(100-your percentile)×869010÷100

Your category rank will be around 14k-15k according to last year trend. With this rank you have low chances to get any government college. You should reappear in april month exam and perform better.

Hope it helps.