Everyone if different. You are on battery all the time, you will have more cycles. If not, and are plugged in, you are not going to see many cycles. Regardless, the battery will wear out over time. Just use it and not worry about others.
The battery doesn't care, when a laptop is plugged in it uses energy from the mains. No need to take it out.
Also, 31 cycles in four months sounds 100% normal. Mine (late 2013) has 204 cycles on it after almost two years of abuse (I plug it in multiple times a day) and the capacity is at 96%, feels like brand new.
It doesn't matter use it how you will, it makes very little difference to modern batteries, they will last between three and five years retaining above 80% of capacity then need replacing whatever you do.