why do people fail at network marketing

Why do People Fail at Network Marketing? I have been in network marketing for over 30 years and did everything I had been told.. I've been in many companies and seen many things! Many people have come and gone, but I'm still here. I took my business online in 2008 and I used to post everywhere on social media. Blasting my link out to everyone. Said how wonderful my company was and the products…. well the products, they cured everything!!!! I cold called people. I bought leads. I went to webinars. I have bought so many of the trainings. I flew to the internationally to events… I…