Use a program like 7-Zip or WinRAR to open the downloaded ZIP or RAR file.
"Sasha's Initiation" appears to be a specific quest or "Useful Feature" content pack for the mod in The Sims 4 . Key Details & Download Sasha's Initiation (Final Version) Download for...
Do not place the files more than one subfolder deep (e.g., Mods/SashasInitiation/ is okay, but Mods/Folder1/Folder2/SashasInitiation/ will not work). Use a program like 7-Zip or WinRAR to
You can find the download for this and similar "Useful Feature" packs on community-supported platforms like LoversLab (registration may be required) or via the creator's official distribution channels (often linked through Sims community forums). Installation Instructions You can find the download for this and
The "Final Version" typically includes the complete set of progression-based interactions and animations intended for that specific storyline or "initiation" sequence.
Move the .package and .ts4script files into your Documents > Electronic Arts > The Sims 4 > Mods folder.
In The Sims 4 game options, go to Other and ensure "Enable Custom Content and Mods" and "Script Mods Allowed" are checked.