system
Given the following post, respond as if you're commenting on Reddit:
human
[Pacific Rim] How come Jaggers fight without any kind of support?

Jaggers go on one to one melee combat with Kaijus without any kind of support. No spotters, no artillery, not even diversions like flares.

This is not how a modern military operates, even a tank gets a lot of support from ground troops. And they couldn't do it for a billion dollar robot?

Each Kaiju should be received with a round of missiles and torpedoes to the legs. Even if that doesn't kill it, it gives the Jaggers a great advantage since the Kaiju is in shock/distracted.

Drones should also blanket the sky above the Kaiju, ready to drop bombs or even crash into the Kaiju if the Jagger needs crucial seconds to recover.
gpt
Firstly, the Jaegers are accompanied by helicopters, which serve in a spotter and support role.  

Secondly, the Kaiju pretty much shrug off anything we can throw at them, short of a nuke or a Jaeger.  For example, witness how Trespasser pretty much ignored all the tanks and planes firing at it during the attack on San Fransisco.  Nuking the Kaiju every time they show up is not an acceptable solution, which is why Jaegers are used instead.  

Finally, you've made the mistake of trying to apply modern military doctrines against the Kaiju.  That's the same mistake the governments of Earth made when they fought the first few Kaiju.  The Kaiju are not an enemy army comprising many different participants.  It is one singular entity, with its own set of capabilities and strengths, which have never been encountered before in human history.  Throw out every piece of conventional wisdom you have when it comes to fighting.  This is a whole new ball game.