Try engineering?
I was in the same boat as you... finished A-levels wanted to fly, but had no chance of getting the cash. I would pick whichever job role will give you the best chance of passing ATPL exams, thats why I went into engineering/design (I started as an apprentice). A friend of mine was in flight Ops, said it was great and not badly paid.
Cabin crew... maybe but I would try engineering or flight Ops first
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