Hey Hoom Rad,
You can sell the products on this website which have Private Label Rights (PLR), Master Resale Rights (MRR), Resale Rights (RR), Commercial Use (CU) license with them.
To sell your products, you need to know where your target customers hang out. For that, you need to do research.
You should build trust with your target customers before you expect them to buy from you.
Maybe, you can give away something for free in exchange for their email ID.
You can then use email marketing to communicate with them to build trust with them.
It takes time but once your target customers trust you then sales become easy.
I hope this helps.