I am trying to make a discord autodelete script with SendInput but there is a problem when I run the script twice, the first time it all good than in the other it dosent respond properly.

this function is on the delete of massage- its supposed to be up, ctrl a, backspace, enter and enter.

static bool DelDiscordMsg()
{
    INPUT inputs[9] = {};
    ZeroMemory(inputs, sizeof(inputs));

    inputs[0].type = INPUT_KEYBOARD;
    inputs[0].ki.wVk = VK_UP;
    inputs[1].type = INPUT_KEYBOARD;
    inputs[1].ki.wVk = VK_UP;
    inputs[1].ki.dwFlags = KEYEVENTF_KEYUP;
    inputs[2].type = INPUT_KEYBOARD;
    inputs[2].ki.wVk = VK_CONTROL;
    inputs[3].type = INPUT_KEYBOARD;
    inputs[3].ki.wVk = 'A';
    inputs[4].type = INPUT_KEYBOARD;
    inputs[4].ki.wVk = VK_CONTROL;
    inputs[4].ki.dwFlags = KEYEVENTF_KEYUP;
    inputs[5].type = INPUT_KEYBOARD;
    inputs[5].ki.wVk = VK_BACK;
    inputs[6].type = INPUT_KEYBOARD;
    inputs[6].ki.wVk = VK_RETURN;
    inputs[7].type = INPUT_KEYBOARD;
    inputs[7].ki.wVk = VK_RETURN;
    inputs[8].type = INPUT_KEYBOARD;
    inputs[8].ki.wVk = VK_RETURN;
    

    UINT uSent = SendInput(ARRAYSIZE(inputs), inputs, sizeof(INPUT));
    if (uSent != ARRAYSIZE(inputs))
    {
        return false;
    }
    return true;
}

static bool NextMsg()
{
    INPUT inputs[4] = {};
    ZeroMemory(inputs, sizeof(inputs));
    Sleep(300);
    inputs[0].type = INPUT_KEYBOARD;
    inputs[0].ki.wVk = VK_RETURN;
    inputs[1].type = INPUT_KEYBOARD;
    inputs[1].ki.wVk = VK_BACK;
    Sleep(300);
    inputs[2].type = INPUT_KEYBOARD;
    inputs[2].ki.wVk = VK_UP;
    Sleep(300);
    inputs[3].type = INPUT_KEYBOARD;
    inputs[3].ki.wVk = VK_UP;
    inputs[3].ki.dwFlags = KEYEVENTF_KEYUP;
    UINT uSent = SendInput(ARRAYSIZE(inputs), inputs, sizeof(INPUT));
    if (uSent != ARRAYSIZE(inputs))
    {
        return false;
    }
    return true;
}

this function is to get to the massage every time it does DelDiscordMsg.

Main:

int main()
{
    std::this_thread::sleep_for(std::chrono::seconds(3));
    bool flag = true;
    NextMsg();
    for (size_t i = 0; i < 5; i++)
    {
        Sleep(500);
        flag=DelDiscordMsg();
        if (flag==false)
        {
            break;
        }
        Sleep(500);
        NextMsg();
    }
}