need javascript developer

my next.js app has 3 problems:

1. fetching images using pixabay.com api throws: TypeError: Cannot read properties of undefined (reading 'data');

2. creating dynamic routes from large db data is toooooooooooo slow;

3. on click button to save large data to the db is toooooooo slow - see the video below;
https://www.loom.com/share/be56d28bacce42cabdf7019233238393

budget: $50, timeline: 5hrs