In order to understand how traffic affects the site's income, first you need to figure out where this income comes from. There are several main ways to make money on websites.
If you're just going to make your own website or blog and don't know which topic to choose, take it seriously. Do not take a niche that is uninteresting and unfamiliar to you. The site is not made for a year or two, but for many years, and you should be interested in the topic. Otherwise, you simply will not be able to maintain the site with content and will abandon it.
In the event that you already have your "home on the Internet", you need to understand how it will bring profitability, and how it is related to traffic.
The first way to make money on the site is contextual advertising
In this case, you need to conclude an agreement with Yandex Direct or Google Adwords. These companies will post their ads on your site. You will receive money for clicks on these ads. The more clicks, the more money.
The second way is to make money on clicks on banners
These are banner ads. To do this, you place other people's banners on your website, i.e. rent out a place. Of course, if the website traffic is zero or very small, there will be no people willing to place their banner on your website. The cost of accommodation is different and depends only on the attendance.
The third way is teaser advertising
You've probably seen how pictures on some sites are spinning with various tempting offers to click on them. These are teasers. The visitor clicks on them, you are credited with money.
The fourth way is making money on affiliate programs
This is perhaps the most interesting and profitable way. It consists in selling other people's goods. This can be done through banners, and through teasers, or simply by offering in the article, by inserting your affiliate link there.
Such products can be, for example, various courses, of which there are a lot on the Internet. You need to choose those that are interesting to you and which have an affiliate program. You can also advertise an online store or travel agency. If a visitor goes from your site to this store and makes a purchase, you will be charged a commission. At the same time, he may not make a purchase in a store immediately, but for a long time. Many entrepreneurs now have affiliate programs.
Approximate statistics are as follows: out of 1000 people who saw an advertisement or read an article, 100-300 people will click on the banner or follow the link. Of those who have passed, 1-3 people will buy. The conclusion is very simple: the more people saw, clicked, and then bought, the more earnings from your site will be. This is called the yield of the site.