Think about it, how many websites do you find yourself on that was just built last month? Probably hardly ever at all. New websites don’t have much content, have no reputation, have no email subscribers, have no social media followers, get no search engine traffic, etc. Those things take time, and in general, that amount of time is about a year or so (give or take).
It’s also important to research their payout structure. Not all payouts are the same and tier affiliate marketing often offer different payouts. Some might pay you on the first offer but pay you nothing on any upsells. Ideally, you should be paid for every transaction. In doing your research, you’ll find out which affiliate payout structures are the most profitable.