I think you’re in the wrong town. It’s seniors in the day time obviously as they don’t work or study. Students and those that work or with children would be going after work or weekends.
As Ranjeet paji has mentioned it is pretty much the same for the Gurdwaras in our area. Sangat do attend, but you should be aware of the diversity of sangat also and the timings of attendance will vary.
Listen to Bhai Jagraj Singh also:
There are Amritdharis advising you wisely and there are those that are yearning for Amrit also advising you wisely. Surely this means something, don’t do something that you will regret later.
Don’t let the negative thoughts come near you, be strong and fight them away. Ask Guruji to help you to stay on their path.
Lets face it. Gurdwara is all about lsngar for most people. They enjoy eating. Otherwise would anyone come? Even for non Sikhs. They just have langar and leave without any kind of effort to teach them about Sikhism.