Why did my Wikipedia edit get removed?

Why did my Wikipedia edit get removed?

The most common reason that a Wikipedia article is deleted is that the topic is judged "not notable". "Notability" on Wikipedia means that the specific topic has received significant coverage in several independent, reliable sources.

Does Wikipedia delete pages?

Deletion of a Wikipedia article removes the current version and all previous versions from public view. Page blanking can be performed (or reverted) by any user, but only administrators can perform deletion, view deleted pages, and reverse ("undelete") any deletion.