If you edit your ad, Facebook will review it from the beginning. The best way is to add the allowed advertising target country and the restricted country. Then, on the ad page, you restrict the allowed advertising countries, leaving only the restricted country for the gambling ad you want to target. As for the account being suspended by Facebook at this time, you limit the duplication of too many ads in an unusual way, maintain a few small advertising campaigns for the spending account for about a week, then gradually duplicate them. Note the duplication of ads, campaigns that are rejected by Facebook, delete them from the account and duplicate the campaigns with new content.