First I want to correct your Bahasa :)
Hobi aku: fitness, <tanda?> dan jalan-jalan.
hobi kamu apa? ceritakan!!
Sampai jumpa.
note: Olahraga fitness (you can just say fitness or olahraga), tanda (I don't have any idea what do you mean)
Hobi aku: baca buku, menulis, serta nonton drama, serial dan film :)