basically

IELTS Writing Task 2,
you have no idea what to write.

scroll

you study a topic

you write an essay about it

you think: I'm preparing

you get to the test room,

you see a new topic :|

this is not bad luck one random question → one random idea but there are hundreds of possible topics you cannot study all of them

good news is

IELTS questions are not random.

they feel random but they are not

no need to study as if they were random and infinite

many many questions

under every question — no matter the topic —

→ one infrastructure

we found it.

many questions → one infrastructure

from that, we find ideas where one idea → many questions

for example,

studying this idea

"Individual action alone cannot solve shared problems."

does not just allow us to answer this question:

Governments should limit the amount of waste produced by households. To what extent do you agree?

but also,

studying this infrastructure,

we only need a few good ideas

to write band 7+ essays about any topic