Here is a fix for that:
Go to your profile on Instagram.In the top-right corner, tap the three-line menu icon.In the menu, select “Settings.”
On the Settings screen, select “Privacy.”
On the Privacy screen, select the “Messages” option.
Under “Allow others to add you to groups,” select “Only people you follow.”
Only accounts you follow will be able to add you to chat groups from now on.
If you, like most people, have a personal Instagram account, there is currently no way to prevent someone from adding you to a group—even if your account is set to private. Instead, you have three choices:
Turn off group request notifications.Get out of the group.Block the user who added you.
To turn off notifications for group requests:
navigate to your profileIn the upper-right corner, tap the menu icon.Then navigate to Settings > Notifications > Direct Messages.
Tap “Off” under Group Requests.
At the very least, you will no longer receive a push notification when someone adds you to a group.
To leave a group chat:
In the top-right corner of the chat, tap the” I “icon.
Under the list of chat members, select “Leave Chat.”Then select “Leave.”
To block the account that is added:
Under Members, tap the three small dots next to the account’s name.
To block that chat, tap “Block.”
This will prevent the spammer from adding you to the group again.
