Describe the bug
It is the first time I use this addon. Somehow after I created the event, and then I right clicked the event and tried to start the raid, it says "You are not in the raid.". Is there a work around.

Edit: the correct English version of the error is "You are not in the raid."

I recommend discussing this kind of issues on discord: https://discord.gg/Qjn8KdD8yt

1. No you do not need to be in an instance to start a raid, but you need to be in inagame raid (not party).
2. If there are some bosses missing for P4 let me know, I might have missed some?

Sounds like user error. Can you post a screenshot?
After you create a raid you need to right click it to select it and start it

I will post the screenshot after I get home. Since this is the first time I use the addon, I would like to know if I have to be in the raid instance to start the raid. If so, it could be that there two raid instances are newly added thus the addon may need to update to know them. Previously they were world boss outside but new they are monved to dungeon.
Also I see there are commits for classic wow sod p1 p2 and p3. Hopefully there wil be a p4 commit soon.

That suggests you actually created the raid without having the profile. Create a profile for yourself first.

I right clicked the event and tried to start the raid.
The error shown in the chat window is "你不在团队/团本活动中。"
This means (in CoreLootManager/ClassicLootManager/Locale/zhTW.lua):

-- ClassicLootManager/Modules/Raids/RaidManager/RaidManager.lua:342
CLM.L["You are not in the raid."] = "你不在团队/团本活动中。"

But I am actually in a raid group.

If I change the code in ClassicLootManager/Modules/Raids/RaidManager/RaidManager.lua:342

    if (self:GetRaid() ~= raid) or not IsInRaid() then

to

    if  not IsInRaid() then

Then I can start the raid.

Create the profile information (for example, import from guild) then I can start the raid.