Articles are a good source. However, you must choose the right places to post the articles. The site should have good indicators. Indicators should be as high as possible. The theme of the site is also very important. The result will not be if you post an article about leather clothing on the site about digital marketing.or internet marketting.

we founding a backlink site can u suggest me ?

commented: in conversation with myself -1

I am also looking for good websites for getting backlinks.

commented: Those links. Bad kitty. -3

Your article should contain important target keywords. It helps to give weightage to your website and helps in indexing. Next, the article must be balanced and must be an easy read. The latest developments on the topic(on which article is writen) can interest readers.

If you are looking for articles site then google it. Here we can't provide sites link. We can't break forum rules. Sorry..
If you want to know about article submission benefits then these are very useful for creating backlinks and providing relevant information to users.