Your English is fine, don't worry. There are basically two ways to get more private shows at the same time.
1. Upgrade the 2nd Skill in the Clicker section of your Skill Tree. The icon looks like a clock on a green background.
Combine that with:
2. The Plant decoration. This reduces the time needed to spawn more Private Shows.
Get that skill to max level as fast as possible, and the plant deco to around level 10, and you will basically have permanent Private Show for EVERY girl. Good luck!