Some users in this forum have made their own CMS-like backends for Hugo but I haven’t seen them around in a long while.
There have been mega threads in the past about this issue like:
https://discourse.gohugo.io/t/web-editor-progress/9617
https://discourse.gohugo.io/t/web-based-editor/155
To name a few backends:
The Frontend Interfaces section from the Docs.