Can I apply for DV Lotto again

[gs_shipping]

I ever had a green card because of DV Lotto 2007, but I had been in the US for
3 months before I returned my green card to the US embassy in my
country. I had not applied for the re-entry permit.
Nowadays I live in my country many years and I have not got back to the US.

I have some questions as follows:

1.Can I apply for DV Lotto again ? I will apply for DV Lotto this year.
When I applied for DV Lotto 2007 and I got the card in 2009 , I wasn’t ready
to live in America for a long time. So I discarded my green card because I
must do my business in my country and I had to study. I’d like to apply for DV
Lotto again in the future because I’d like to do business in the US.

2.Are there any cases that some persons have ever had green cards due to DV Lotto, but they discarded their cards and they got green cards again because of DV Lotto ?

Thanks