So if they say don't lose heart when waiting for the call, wait patiently for three to five days. If there is still no phone call after a week, you can take the initiative to call and ask. I wonder if you want to join this big company. If so, you should take the initiative to call for advice and let them see how much you value this matter. Generally, asking this question can increase your goodwill.
After the other person tells you, he will ask if you have any chance of being hired if you improve in this field. This is my personal experience in another interview, and I was asked to look for a job. There is no need to feel embarrassed, every company likes employees to be aggressive!