What niche are you an expert in? Pro tip #1. Don't promote products or services that you wouldn't either buy/use yourself or have little to no knowledge in.
People can small BS when reading content in which they get the feeling you have no clue about the product but trying to earn a commission.
Let us know your niche and we will find good affiliate programs for you to join. You can be in a low paying niche but if you can get 20 referrals and that's a residual affiliate program, the money ads up. I don't join an affiliate program for the payout amount. I join because I believe in that product and feel confident that my audience would benefit if using that product.