Khssni/Khassni = I should, I ought to, but it also means I need.
Kan7taj means solely I need.
Amtila is plural of mital, example.
Mitel is MSA mainly, and it means like. In Darija we say b7al, or f7al, or kima.
It could mean many things. But it’s not a plastic bag.
It could be anything with holes, from a plastic plate, to a piece of cleaning material.
Look at this:
As it has holes, we call it mchebbek, or even chebka itself.