(06/08/2021)

1. Where is the transition counter? ✔​

2. Where can I go to transit? *Where do I make my connection?

~> Corrected: The sentence is corrected grammatically.

Your sentence has a correct grammatical structure, but this has the correct usage/expression.

3. Should I find my luggage? *Do I need to pick up my luggage? 

~> Your sentence has a correct grammatical structure, but this has the correct usage/expression. ​​​​