If you think that the name of a page is incorrect, you can change it. It's not necessary to create a page and redirect it because it creates confusing redirects. If you want to create a page, first notify an administrator.
ARI by Ariana Grande is the name of Ariana's first fragrance. All Ariana's fragances has "by Ariana Grande" in its title.
I noticed that you redirected pages to disambiguations. Please, disambiguations pages are if there are two articles (or more) with the same name/title. (like "My Everything" the song and My Everything album)
You removed all the info from "My Everything" (song) page and redirected it to the disambiaguation page.