To break it down, the word is divided into three syllables: "fest-i-val".
The first syllable, "fest", sounds like "f-e-s-t" with a short "e" sound and a soft "s" sound, similar to the word "best".
The second syllable, "i", is pronounced like the letter "e".
The third syllable, "val", sounds like "v-a-l" with a short "a" sound and a soft "l" sound.
Overall, the pronunciation is somewhat similar to the word "festival" in many other languages, so it should be familiar to non-native English speakers.
It's important to note that different accents and dialects may have slight variations in pronunciation, but the guide provided here is a standard English pronunciation.