I am trying create share button for sharing via Linkedin include title and description
I figured out that it possible to do via Custom URL, like that: https://www.linkedin.com/shareArticle?mini=true&url=http://developer.linkedin.com&title=LinkedIn%20Developer%20Network&summary=My%20favorite%20developer%20program&source=LinkedIn
if i try make it for my cause, it share only link not title and description:
Info i take from here: https://developer.linkedin.com/docs/share-on-linkedin
In conclusion, my question is how to make sharing include title, description and link at the site which i want

Your url and some of the parameters need to be urlencoded, so for example the url parameter should look like that:
https%3A%2F%2Fathenatools.com%2FYou can use this tool: https://www.url-encode-decode.com/