Results aren't guaranteed, they're earned
Since everyone knows why SEO is healthy for a website and how it is important to rank on the top results for the keywords.
There are 2 types of SEO techniques – Black Hat & White Hat techniques
Creating spammy & irrelevant links comes under black hat SEO techniques. Building quality backlinks that are niche related and obeying the guidelines while building the links comes under white SEO techniques.
Have a look at the below lists where I’ve got all the backlinks through white hat techniques.