I suggested "He does not like bananas much" as a possible translation (I'm a native).
Update: accepted now, don't know since when
How would you say: He really does not like bananas.
Він дуже не любить банани
The same as in English, right?
"Не does not really like bananas."
You did not type "He" using Latin characters. You typed using the Cyrillic "Н" instead of the English "H", and the Cyrillic "е" instead of the English "e".