A pretty basic question regarding Saros cycle (I think)

So I am thinking of working on an eclipse prediction working model for a subject I have in my first year graduation course.

To understand how eclipses work, I learned about the Saros cycle and how every cycle works.. but I am having trouble to understand how we observe appropriately 2 eclipses every year despite the Saros cycle being about 18 years long..

Idk if my question is too lame.. but I really need to understand it in order to make an acceptable working model based on this phenomenon.

Any help will be appreciated 🙂