Three parts: a place name, a drug with widespread use in some parts of the World, a synonym.
I would guess it’s Deli-cat-Essen, which was an early thought but I’ve never heard of the last two words in those contexts or the film. So I’ll try
Delicatessen.
That is correct!
Delhi + qat + Sn
OK. This is hopefully an easier one:
Sounds like the left-hander has a hatchback.
Does it help if I say
Sounds like the left-hander has a Japanese hatchback.
This film was the first break for somebody who died this year.
I’ll try to make it even simpler:
Sounds like left-handed boxer has a Japanese hatchback.
The clue about first break above might be misleading - it wasn’t in the film version.
Southpaw
South Pacific
That’s it Arena - (Southpaw Civic) …
Over to you…
Georgia? Yes but not much
Gaslight?
Yes PR
Ok Arena. Next:
You probably won’t mind this insect getting under your skin.
The Love Bug?
Correct Amac
OK, thanks. Next one:
Girl gets cheek with a little twist.
Imprudence
No, not that one. This film stars a well known actor who’s also an award winning director.
This is a single word answer with three equal length elements…
Gallipoli?
Well done PR 
Over to you…