Not neccesarily
There MAY be two on each side - but there also may be 3 one side, and 1 on the other - or even all 4 on the same side accasionally.

If you watch on successive nights, you'll see that the moons change positions from one night to the next, as they 'dance' around the parent planet.
Sometimes, you might only see 3 of them, or even 2 - this is because occasionally one will be behind the planet, or maybe in front of it.

In a large telescope, when one passes in front of the planet, you can sometimes see the shadow of the moon in front, on the surface of the planet.