If you strictly require Lightroom for school or work, look into official avenues to lower the cost:

: A powerful cross-platform raw image processing program that provides high-quality results from your digital photos.

Many people believe that downloading software from an "index of" page is a gray area. It is not. It is clear-cut copyright infringement under the Digital Millennium Copyright Act (DMCA) and similar laws worldwide.

Software development requires massive capital and human resources. Piracy directly reduces the resources available to improve future tools. Safe and Affordable Legal Alternatives

While searching for "index of adobe lightroom cracked" might seem like a quick way to get free photo editing software, downloading cracked files poses severe security risks and legal dangers. This guide explains why open directories containing pirated software are dangerous and provides safe, legal alternatives. What Does "Index Of" Mean?