Is there any event for bot that I can use every time it is added?

Here is something I found on Internet.

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clearab commented on Jan 17, 2020 •
A couple of things to add here:

The conversationUpdate event is sent in slightly different instances depending on context:

For a 1:1 conversation between the bot and a user (personal scope) the event is only sent the very first time the bot is installed. Technically, it is sent when the conversation is created between the bot and the user. If the user uninstalls the bot, this conversation is not deleted, so if the user then re-installs the bot the event is not sent.
For Group Chats and Channels the event will be sent each time the bot is installed. This is because each time the bot is uninstalled from this context, it is actually completely removed from the conversation, so an uninstall triggers the event.
An important distinction - the event is sent on a "best effort" basis. It is not 100% guaranteed to be sent, and is definitely not 100% guaranteed to be received. Outages and transient issues can affect the send (but they should be exceedingly rare).

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So If I understood correctly, it sounds like this guy is saying that if the bot was installed under Team Channel, that conversationUpdate event is triggered.

Well..here is my manifest of my bot.

"bots": [
{
"botId": ...,
"scopes": [
"team",
"personal"
]
}
],

So my bot should support team and personal scope..so I tried to install my bot under team channel...and ..then reinstalled..however, conversationUpdate wasn't triggered. Somehow my understanding wasn't correct??

Only thing I am able to see is that the conversationUpdate event is triggered ONLY the bot is fully registered again with new guid....