I think it can often depend on the time of the day you post. I've noticed that most of the top posts are posted late at night (UK time). Or sometimes it just depends on the topic, e.g. anything about toners always gets lots of attention (just something I've noticed).
It's just like anything on social media - some people get the 'special formula' just right and it draws lots of attention and becomes even viral as popularity draws even more attention to it.
Please don't take any of it to heart, social media can have so many negative affects but lack of comments or likes is not a reflection of you as a person. It lifts up certain people and brings down others unfortunately ππ