WordPress website URL get distorted

Unfortunately the underlying systems on which the web runs requires that URLs contain only a limited range of ASCII text characters. Because the Hindi letters are not part of the allowed character set they are converted into the sort of string that you are seeing in your URL, with the % used to separate each character encoding. There is more detail about this process here.

Your web browser is being nice to you and converting this back to Hindi for you, but the actual URL behind it is the encoded string you see when copying.

As far as I am aware, the only way to simplify the urls for sharing would be to change the article permalinks to only contain standard ASCII characters, eg. a-z or 0-9.

@glendaviesnz has summed it perfectly.

You can further use URL shortners to make your URLs look short and simple. Here, Try this : https://www.ads-software.com/plugins/url-shortify/