How to loft in a correct way?

i am currently doing loft. two voronoid at the top and one circle at the bottom. but loft is made inside the outside the circle(i dont know this is the right explanation sry). how can i make the loft in right way?
스크린샷 2024-02-04 153737
image
first picture is wrong loft and second picture is image how i want to loft

Please include a file which replicates the problem. Ideally as simple as possible by internalizing and removing anything which doesn’t have a bearing on the issue.