Caption: A diagram illustrating the tidal force and how tidal locking is effected.
Features:
In the Earth-Moon system, this means that we are viewing the system from the south celestial pole (SCP) side of the celestial sphere.
The situation is similar to that of the Moon and the Earth.
So the near side of the small astro-body is pulled on more strongly than the far side.
Both near and far side are in orbit around the large astro-body. The near side does need more gravitational force than the far side since it has smaller orbit.
When tidally locked, the small astro-body has Ω = ω, and so always turns the same side facing the large astro-body.
From another perspective, the tidal locking is EXACT ON AVERAGE.
For example, tall buildings sway with wind perturbations, but keep returning to being nearly exactly upright.
But the larger astro-bodies in mutually orbiting pairs because of their larger mass almost always initially have more axial rotation angular momentum (resistance to change of axial rotation angular velocity) than smaller astro-bodies. Also the smaller astro-bodies have smaller tidal forces than larger astro-bodies. The result of these two conditions is that it takes longer, often much longer, for the larger astro-bodies to become tidally locked to the smaller astro-bodies, than vice versa.
This is due to libration---which we won't describe here---see Wikipedia: Libration if you must.
Actually, the axial rotation angular velocity of many minor moons are NOT perfectly known, and so it is NOT known if they are tidally locked or NOT.
For some information concerning Solar System moons that are NOT tidally locked, see Wikipedia: Tidal locking: Occurrence: Moons.
Among the planets, only ex-planet Pluto is tidally locked (see Wikipedia: Tidal locking: List of known tidally locked bodies). Pluto and its largest moon Charon are mutually tidally locked.
If you were on the Charon/Pluto-facing side of Pluto/Charon, you would always see Charon/Pluto in the sky at the same location relative to the ground and with its Pluto/Charon-facing side turned toward you.
The other planets have NOT become tidally locked to their moon of strongest tidal force for the reasons given above. Also the effect of the multiple tidal forces (due multiple moons and the Sun) acts against tidal locking to the moon of strongest tidal force.
Why are NO planets tidally locked to the Sun?
Although the Sun has the strongest gravity, its tidal force is too weak as it turns out even for Mercury where it is strongest. Actually, Mercury is an unusual case because it has a 3:2 spin-orbit resonance (see Wikipedia: Mercury: 3:2 spin-orbit resonance). We will NOT go into this complex case.
The Moon's tidal force on the Earth is slowing down the Earth's rotation, and thus increasing the length of the day.
However, the slowing rate is so slow that the Earth will probably NOT become tidally locked to the Moon before the Sun's red giant phase in ∼ 5 Gyr (see Wikipedia: Sun: After core hydrogen exhaustion) when the Sun may well vaporize Earth and Moon (see Wikipedia: Tidal acceleration: Effects of the Moon's gravity)---lucky us.
If the orbit of an astro-body about another astro-body is NOT circular (i.e., has non-zero eccentricity), the tidal force varies with the orbital radius: stronger when orbital radius is smaller, weaker when orbital radius is larger.
The varying tidal force perpetually flexes the astro-body in the noncircular orbit which results in resistive forces inside the astro-body to turn macroscopic mechanical energy from the two astro-bodies's motions into heat energy.
The heat energy can cause some degree of geologically activity.