You'll need UE4SS to run the mod: https://github.com/UE4SS-RE/RE-UE4SS/releases

You can follow the installation guide on github, but TLDR: you can probably just download the latest stable UE4SS_Xinput and extract it to: 
"...\SteamLibrary\steamapps\common\Hogwarts Legacy\Phoenix\Binaries\Win64"

After that, or if you already have UE4SS, Just extract the LovelyRats zip contents directly into: 
"SteamLibrary\steamapps\common\Hogwarts Legacy\Phoenix\Content\Paks\~mods"
Create the folder if it doesn't exist yet.

Additional information in case of mod conflicts:
- Packed in chunk: 134 (the game might crash if you have two mods using the same chunk)
- Overridden files:
	-SK_GreyCat
	-T_Cat_Calico_D
	-T_Cat_Orange_Body_D
	-T_Cat_Siamese_D
	-T_Cat_Somali_D
	-T_Cat_Spotted_D
	-T_Cat_Striped_D
	-T_Cat_Striped_N
	-T_Cat_Striped_SRXO
	-T_Cat_Tortise_D
	-T_Cat_TurkishVan_D
	-T_GreyCat_Body_D
	-T_GreyCat_Body_FurBase_MSK
	-T_GreyCat_Body_N
	-T_GreyCat_Body_SRXO