Do planets do 'death spirals' before they crash into other planets or other objects?

It all depends on your timeframe.

See, technically the moons doing a "death spiral" outwards right now. The longer the timeframe, the shallower the angel of descent for your smaller or less massive planet, and the closer you are to reality. In a boiled down sense, i mean. For 2 planets to collide, theyd have to share the same orbit and neither would end up being anything more than debris. But thats for a different question altogether.

The less time your death spiral takes, the steeper the descent. Even then its a spiral, just a really pathetic one thats more shaped like a 6. Either way, that doesnt happen outside of movies.

No, its not a normal process for planets to crash into each other.

Once a solar system is formed, the planets are in stable orbits around the star. There is no reason for planets to crash into each other.

You do realize that movies are FICTION, right...?

If a planet was going to collide with Earth, it would likely take much longer than that. The planets would just miss each-other, hurtle away from each-other, repeat this process, then, over time, they would collide.

It crashed into Jupiter at very intense velocity, Jupiter has an vast gravity. because of the fact the comet have been given deeper and deeper interior Jupiter, The rigidity began to extend and the comet became overwhelmed. It can not pass by Jupiter because of the fact it would get overwhelmed earlier it did, assuming that did no longer happen it would crash into the solid center, assuming that did no longer happen it nevertheless does no longer be waiting to pass by because of the fact Jupiter has has vast gravity and if the comet in a roundabout way have been given to the different factor, Jupiter's gravity might only pull it back in. only like the in spite of the incontrovertible fact that test of falling to the different factor of the international. in case you dig a hollow at modern in the process the middle of the Earth and bounce by, once you have been practically to the different factor you will possibly get pulled back to the different factor, and then a similar element might happen on that factor, and this might continuously happen except some one caught you.

Well, there's no music playing during their death dance if that's what you're asking.

It depends on their trajectories.