Here is how they mostly work: You sign up and pay the buy-in fee to receive your startup kit, and then you start clogging everyone’s social media feeds about your new venture and beg your friends and family to join you on your “journey to financial success”. You host a bunch of fake parties and wine tastings or worse, you meet up one-on-one to catch up and the whole thing turns out to be nothing more than a demo and sales pitch where you guilt your friends into buying stuff they don’t want or need. After you subject them to that, you then try to recruit them to join your team of consultants, or whatever term your particular MLM uses.
But more than product selling MLM/NM provides a lucrative option to earn great part/full-time money and most importantly passive income. Once you sign up somebody in the business by selling a product and he signs-up someone else and so on, you create a network of people who are recommending a product or offering a business opportunity thus generating sales for the company and also earning 10-125 of the total sale happening through your network. In MLM u get percent of every sale that happens in your group of people directly (when u personally sell to someone) or indirectly (your team member sells to someone). So, if you have a network of 10 people and your team sold product worth $1000 then you would earn $100-150 as commissions. For direct sale u get more money.

MLMs have been made illegal in some jurisdictions as a mere variation of the traditional pyramid scheme, including in mainland China.[10][11] In jurisdictions where MLMs have not been made illegal, many illegal pyramid schemes attempt to present themselves as MLM businesses.[7] Given that the overwhelming majority of MLM participants cannot realistically make a net profit, let alone a significant net profit, but instead overwhelmingly operate at net losses, some sources have defined all MLMs as a type of pyramid scheme, even if they have not been made illegal like traditional pyramid schemes through legislative statutes.[4][19][20]