Your favorite marketing method for sales generation

I am running multiple small businesses but my sales are small. I use SEO and social media marketing to market my business, however my sales are not improving. What marketing methods are you using to generate sales and leads. Do you run ad campaigns or rely on free methods? When it comes to running ads, where do you launch your ad campaigs? What is the conversion rate?

When I put rice in my shop then I found no customers for it then I printed pamphlets for it and started through in nearby houses of my shop. This idea given me unbelievable extra ordinary result and people started purchasing it.

I think when we come to the matters of running small online businesses we should be curious about the method to use to generate more sales and leads for that matter.