Is their a location close. To the arena curbside for cabs Lyft and uber

As already stated yes there is. When arriving just ask your driver if it's still on the Westside of the arena as things sometimes change at venues.

I believe it is on the northwest side of the arena.

Yes

Yes, there is a spot north of the movie theater designated for Uber and Lyft drivers to wait, and there are cab banks on the east and west sides of Westgate for regular taxi cabs.

Yes, there is an uber/lyft stand on the northwest side