You might see five different "Download" buttons. Four of them are ads that lead to browser extensions or "PC cleaners" you don't need.
Files with randomized names like "z1so6zv1lijn" are often generated by automated systems. In many cases, these links are used to distribute: Download File z1so6zv1lijn.zip
Sites often make you wait 30 seconds to encourage you to buy a "Premium" account for "fast downloads." You might see five different "Download" buttons