No, you only get access to the Al Safwa lounge (the famous one) if you're travelling in First. As a J passenger you can access the Al Mourjan lounge, and your Gold card (GGL is irrelevant to Qatar) gets you into the 'Platinum lounge', which is the lounge for OW emeralds. The Al Mourjan lounge is the better one for you to use though.

You can see the rules onn here https://www.oneworld.com/airport-lou...s?location=DOH