SVG with animation effect

I am not sure if it is sort kind of SVG graph(sorry i don't know how to describe it in technical terms if say anything unclear )

I would like to know how to make the repeated effect when scrolling on page as shown in the following examples, particularly the example Two:

example one: gardenestudio.com.br

example two

For SVG, I think I would use this

function

After finishing the SVG part, I wonder how to make the effect as I want in the above examples?

Since I am not familiar with SVG and code, I don't know if it is work....Sorry for making any unclear if I say anything wrong.

Could anyone be generous to let me know in detail, better explain step by step how to make such kind of effect on the website if the above means is not work or if it is work... I don't mind learning with time and effort.

Thank you very much!!