We came by the Chinese restaurant to experience eating with its unique sticks. klingt das natürlich?

@giyotin Now I know what you mean. You were walking around and decided to STOP INTO a Chinese restaurant to experience eating with chopsticks. Once there, you can take a picture and post it on Instagram with the caption "We stopped into a/this Chinese restaurant to experience eating with chopsticks." COME BY doesn't work here because it's normally what someone in their home or business says to YOU: "If you're out and about today, come by the salon and I'll give you a haircut." They're inviting you to their salon. -or- Let’s say your friend owes you money and was going to pay you today. But he got sick and didn't go to school. He can text you: "Come by the house and I'll give you the money I owe you." That's because in English, COME is towards the speaker, and GO is away from them. Consequently, you can only COME HERE and GO THERE. You can't COME THERE or GO HERE. So if you're walking and the restaurant is across the street, then you GO THERE. Finally, COME/GO BY is used for planned short side trips - places you plan to visit on your way to (an)other place(s). Sitting down for a meal isn't normally considered a short stop, so GO/COME BY would sound a bit out of place in this context. I hope this all makes sense. Let me know if you have any questions.