These days search engine is very strict one needs to follow certain guidelines to save him or her from the penalty of google.
I am listing some of the important points which should be kept in mind here are those:
1.) Copied content : Copied or thin content can definitely lead to penalty. You need to write original content.
2.) Good links: You need backlinks from good and authority sites not from sites having many outbound links
Always prefer
Good amount of social media signals these helps a lot in making trust in the eyes of google. Google loves social signals.
Always use keywords on your h1 and 100 words of content google and user both loves content.