[Manal]

Manal has given multiple good advices above for over eager SEO folks above. I would like to add or kinda reiterate that those olden golden days of easy grey and black tricks of fooling Google ranking is over. Nowadays they have negative effects and algorithm to detect manipulation or tricks. You can be sure that any simple tricks wont work. The engineers there are not your run of the mill code copiers.

You get positive effects from backlinks which are organic and really relevant, residing on sites which are themselves of proper rank in relevant niche.

And all those negate results in your website getting listed into their Penguin listing... Which technically means your website being penalized due to "bad practices".

Most of the times you're told about this in your Google Search Console but depending upon severity, it varies.