The second point is to locate special customer groups. For example, if your customers are mainly college students, you should go around the university or find customers in a more youthful place.
The last sentence must be diligent and have a good relationship with customers. Maybe your customer brushed it once and he doesn't want to buy it now, but it doesn't mean he won't need it in the future, so you need to always appear in his sight and get on well with your customers. Maybe even if he doesn't buy it, he still has an impression on you and will introduce it to you when his friends need it.