For 1-4, any would be better than some.
5-8 are fine.
1. We don't want some chocolates.
2. We don't want some wine.
3. There aren't some strawberries.
4. There isn't some water.
[Can we use 'some' in a negative sentences like this?]
5. Some books are not useful.
6. Some boys are not good.
7. Some apples are not bad.
8. Some students are not good at baseball.
[Are the four sentences above correct?]
2 answers
It would be better to state the positive in 5-8. Most boys are good.