How do Tides Work on Flat Earth

Isaac Newton theorized and it is now commonly taught and believed that Earth's ocean tides are caused by gravitational lunar attraction. The Moon's gravity allegedly generates something called “tidal force“ which causes Earth and its water to bulge out, not only on the side closest to the Moon, but also the side farthest from the Moon. Using their own calculations and predictions, however, if the Moon is only 2,160 miles in diameter and the Earth 8,000 miles, it follows that Earth is 87 times more massive and therefore the larger object should attract the smaller to it, and not the other way around. Heliocentrists claim Earth's greater gravity is what keeps the Moon in orbit, therefore it is impossible for the Moon's far lesser gravity to supersede the Earth's gravity at Earth's sea-level, where its gravitational attraction would even further out-trump the Moon's. If the Moon has enough attractive influence to lift the ocean's water even a single inch from their d