Determine the nature of your products
While any avenue can take you to a particular destination, not all will take you to where you want to go. In business, this is also true. While every market has some customers, not all markets will be beneficial to you. This means that your products will not fit in every market. For instance, if you are selling fashions, you cannot list your products on an online marketplace destined for cosmetic sellers.
Same way you cannot offer footwear on a platform set for groceries and foodstuffs. For this reason, before subscribing to a given channel, it is essential to consider the nature of your products vis a vis the target customers requirement. Do not offer your products on a marketplace with zero potential.