I didnt watch the video, but me and my friend mainly raid people. Here are some tips
1) Don't just raid any building you see, monitor the big groups of people and look where they stash their stuff
2) Don't be intimidated by large buildings, it sometimes takes only 6 -8 c4 to get to their loot, you just need to know where to c4.
3) Don't raid when the people are online. You need to be a very stronger group to achieve success doing this. We usually try to avoid raiding people while they are online as you risk a lot.
4) No base is unraidable. There are many tricks to raiding, using pillars, stairs, barricades, spike walls, sleeping bags etc etc. We haven't found a building we could not raid.
5) Don't just start popping c4. Take the time to look through all the walls, build up next to the house and look through each floor carefully. You can sometimes see through 2 walls if you try really hard.
6) Try to think how they move in the building, where do they go.
7) We have notice people either store their stuff on the first floor, or on the 2nd or 3rd floor from the top.
I hope this helps
thank you this helped