after unloading a post, an image cannot be edited if a bad image is uploaded

if I post, it is not possible to change the image to edit I hope they put in the opportunity that when we unload a post and upload a bad image, the person can be edited and improved.
please do it so that they can be edited by users! if a bad image is uploaded then don't delete it but you can just edit it to upload a new image Thanks in advance