In google console production tab, I have only "edit releases" button instead of a "create new release" button.

You have already uploaded the apk file which has been saved in the library against this app in you google play console. If you want to create new release instead of the uploaded apk file, then you have to discard the previous one from the button in releases menu.

CodePudding user response：

You currently have a draft release. Either publish or delete your draft and you will be able to create a new release.