Using なる with negative verbs?

Hello bunpro!

I’ve got a question, which I don’t seem to be able to find an answer to.
I have learned, that I can use なる with nouns and adjectives (even though the lesson on bunpro only says adjectives for some reason) but in a japanese song I’ve heard the phrase: 何もやりたくなくなる

At first I thought this may be a play on words, but this seems to be a natural phrase, that japanese people often say in their head.

So I’ve googled around, but all I could find about using なる with verbs was turning the verb into a noun first.

So I am confused, why can I use なる with negative verbs and what does it mean? Can anyone explain that to me, or point me towards some website or reading material where I can look it up for myself?

Edit: I’ve asked this question on hinative, and some nice people were able to answer that question. If you struggle with this question yourself, go read this thread:

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This seems perhaps related to your question:
https://japanese.stackexchange.com/questions/59253/using-%EF%BD%9E%E3%81%AA%E3%81%8F%E3%81%AA%E3%81%A3%E3%81%9F-vs-%EF%BD%9E%E3%81%AA%E3%81%84

なくなる (the adverbial inflection of ない + なる) is very common. This essentially means to reach a point where something no longer takes place. Depending on the context, 何もやりたくなくなる means something like, “I no longer want to do anything” (it could translate a couple different ways).

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Yes, as far as I understood it, it implies a change in status. From wanting to do anything before, to no longer wanting to do anything. Something happened and now you no longer want to do anything.

Like: 肉を食べたくなくなる ← “I became not wanting to eat meat”
So you ate meat before, then something happened, and now you “became” not wanting to eat meat anymore.

I’ve asked this question on hinative as well, and got some really helpful answers, I’ve linked it in my original post.

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Yep, that’s right. It’s essentially a change to the negation of a state. Whereas になる means to become or to reach a certain state, なくなる means to become or to reach a point where it is no longer that state.