저는 좋은 친구들이 (많이) 있어요.
[juh-neun jo-eun chin-gu-deu-ri (ma-ni) i-ssuh-yo]
저는 재미있는 친구들이 (많이) 있어요.
[juh-neun jae-mi-it-neun chin-gu-deu-ri (ma-ni) i-ssuh-yo]
(많이) is many
Have is normally 가지고 있다. but you can't say with people like that sentence in Korean. (friend, family etc)