how to show alert in the redirected page?

in index.php I have 3 buttons (add, delete, edit)

if I click to delete it will redirect to the delete page query (delete.php)

after delete success, the page redirects to index.php and the sweet alert2 will popup with a success message (deleted successfully)

if I add a user the msg will change to added successfully

it depends on where I redirect to index.php

so what I can do?

source https://stackoverflow.com/questions/70159593/how-to-show-alert-in-the-redirected-page