First, it is very hard to determine what you did wrong, as your explanation lacks clarity and relevant details. I'd recommend getting on the Strive Discord (https://itch.io/t/284398/discord) so that we can run you through the modding process, as that tends to be a bit faster. I'll try to guess at some issues anyways.
Second, there are 2 folders named "mods": the program folder ".../strive-for-power-OS/files/scripts/mods/" and the AppData ".../Strive/mods/". The exact file paths will depend on your system's OS, but the first one will be the one that you downloaded and the second will be created when the game runs. You need to put the downloaded mods in the second folder. The mod menu can be used to open the correct folder, where you need to put the mod folders.
Third, this mod does not add any new scenes, it adds new buttons to the sex interaction. It's possible you meant adding entries to the mod menu, but your explanation is hard to understand.
Forth, if you are playing on MacOS, then there are additional steps that need to be performed to enable modding as the files are formatted differently. https://itch.io/t/628179/how-to-make-mods-work-on-mac-osx-without-wine