You have almost answered your own question.

The spaceship will turn so that the main engine thrust is precisely opposite to the craft's direction of motion in the orbit.

The burn will then slow the craft and the orbit will start to dip into the atmosphere and then end up colliding with the ground.

The point of maximum effect of this maneuver is on the opposite side of the planet to the burn.

So where the burn is conducted the craft will NOT lose altitude but instead will lose SPEED which causes it's trajectory to intersect with the ground about half an orbit or so later, unless you completely stop the craft. Then it would fall straight down to Earth.

The lowest point in a orbit is known as the periapsis, the highest is the apoapsis.

You have almost answered your own question.

The spaceship will turn so that the main engine thrust is precisely opposite to the craft's direction of motion in the orbit.

The burn will then slow the craft and the orbit will start to dip into the atmosphere and then end up colliding with the ground.

The point where the effect on the orbit is maximum is on the opposite side of the planet to the burn.

So where the burn is conducted the craft will NOT lose altitude but instead will lose SPEED which causes it's trajectory to intersect with the ground about half an orbit or so later, unless you completely stop the craft. Then it would fall straight down to Earth.

The lowest point in a orbit is known as the periapsis, the highest is the apoapsis.

You have almost answered your own question.

The spaceship will turn so that the main engine thrust is precisely opposite to the craft's direction of motion in the orbit.

The burn will then slow the craft and the orbit will start to dip into the atmosphere and then end up colliding with the ground.

The point where the effect on the orbit is maximum is on the opposite side of the planet to the burn.

So where the burn is conducted the craft will NOT lose altitude but instead will lose SPEED which causes it's trajectory to intersect with the ground about half an orbit or so later, unless you completely stop the craft. Then it would fall straight down to Earth.

You have almost answered your own question.

The spaceship will turn so that the main engine thrust is precisely opposite to the craft's direction of motion in the orbit.

The burn will then slow the craft and the orbit will start to dip into the atmosphere and then end up colliding with the ground.

The point where the effect on the orbit is maximum is on the opposite side of the planet to the burn.

So where the burn is conducted the craft will lose altitude but instead will lose speed which causes it's trajectory to intersect with the ground about half an orbit or so later, unless you completely stop the craft. Then it would fall straight down to Earth.

You have almost answered your own question.

The spaceship will turn so that the main engine thrust is precisely opposite to the craft's direction of motion in the orbit.

The burn will then slow the craft and the orbit will start to dip into the atmosphere and then end up colliding with the ground.

The point where the effect on the orbit is maximum is on the opposite side of the planet to the burn.

So where the burn is conducted the craft will drop lose altitude but instead speed which causes it to intersect with the ground about half an orbit later generally.