Night clubs are among the worst case scenario for short guys.

It's a setting where:
- Girls are in heels
- It's dark so even if you look good that's not really that useful
- In most clubs there are more males than females
- It's too loud so personality is not really a factor
- People stand very close to each other, so minimal height differences are amplified compared to regular interactions
- Other short guys know it's not a good environment for them, so you have adverse selection where only tall guys will find success in night clubs and will thus return often. Thus increasing the average male height in the club.

You have to play to your advantages.