1. there were only afew/much people in the cinema.
2. he has less/few money than his brother.
3. there isn't much/more food left for dinner.
4. there aren't much/many giant pandas left in the wild.
5. very few/less people live in the desert.

1. There were only a few people in the cinema.

2. He has less money than his brother.

3. There isn't much food left for dinner.

4. There aren't many giant pandas left in the wild.

5. Very few people live in the desert.

*С исчисляемыми существительными используй few (a few), many.

С неисчисляемыми нужно использовать слова little (a little), less, much.

**people = люди, исчисляемое (это множ. число для слова person)

 food (еда) и money (деньги)  - неисчисл., в англ. эти слова используются в основном в ед. числе