problem after tracing image

[romeozzzzzzz]

Good afternoon

I downloaded a Jpeg image from shutterstock website and and traced it using illustrator in low color

When I traced , ungrouped it to single paths

My problem is that selecting certain paths is very very complex , I can't select perfectly

I want to take as an example each of boys and girl in a single group to move it alone and so grass and butterflies

How can I do it with illustrator Please ????.... this is the image i work in

Thanks