Dont worry de lah lol.
Ok lah for some tips for people whom just come out just pass driving.
You see big vehicle sure very scared to overtake or drive beside it.
The good and safe way to do so learn how the big vehicle is driving.
If that driver zig zag like in the video, just slow down. Slow down till you have a safe distance between him and you. Follow 2 second rule sure cannot go wrong. Wet weather 4 sec rule.
Another way is if they too slow and you wanna overtake them. Just signal your intention and when you are accelerating and moving to the front of him, just give a tap horn and slowly overtake the big vehicle. Please do not keep looking at the big vehicle beside you. The more you see it the more you will feel afraid. Just be confident and move forward slowly. You can glance, but do not stare. lol
Learn all this from SAF driving school.