On a global and multilingual standpoint, when doing SEO in multiple languages and cultures, only a native language SEO specialist would truly understand the behaviors, usage, and types of keywords that respond to their market. Outside of the implementation of hreflang and market/language rich keywords, all the same rules apply to multilingual SEO as in regular English SEO.
Poor User Experience: Make it easy for the user to get around. Too many ads and making it too difficult for people to find content they’re looking for will only increase your bounce rate. If you know your bounce rate it will help determine other information about your site. For example, if it’s 80 percent or higher and you have content on your website, chances are something is wrong. https://businessinsightsbiz.tumblr.com/