Great question! Native English speakers typically do not use "go" after "going to" when "going to" is used as a future tense structure. Here’s the breakdown:

1. "Going to" for Future Intentions (No need for 'go')

When "going to" is used to express future plans or intentions, it is followed by the main verb, not "go":

Correct: I’m going to eat dinner.

Incorrect: I’m going to go eat dinner. (Unless you specifically mean movement, explained below.)


2. "Going to go" (Movement + Future Intentions)

If "going to" is meant literally (movement from one place to another), then "go" is necessary:

I’m going to go to the store. (= I will move to the store.)

She’s going to go see a movie. (= She will go somewhere to watch a movie.)


3. When ‘go’ is NOT needed

If the movement is already implied or unnecessary, native speakers often just say:

I’m going to the store. (Instead of I’m going to go to the store.)

We’re going to a party. (Instead of We’re going to go to a party.)


Key Takeaway:

If you’re talking about future plans, don’t use "go" (I’m going to sleep).

If movement is involved, "going to go" is okay but often shortened (I’m going to the store instead of I’m going to go to the store).