Which variant is the correct plural form of a noun "fruit"  - "fruit" or "fruits"?
Please, native speakers, answer me what plural form is the most common in your country.
Definitely 'fruit'.
(You can search for and find a huge amount of discussion about this, on the Forum. It seems to be a topic that fascinates learners.)
Fruit can be both singular and plural depending on its usage. A bowl of fruit not a bowl of fruits. The fruit of the spirit is a collection of fruits. Fruits is always plural