who always want to cone people and earn money. You need to stay safe from these kinds of agencies.
Once you choose a company through an online medium such as freelancing sites or directly from Google. You must ask them about the process of their work. How they are gonna start with your work. Not every business is the same so as they require different SEO strategies to gain visibility.
Second, step would ask them about their strategies of work for different niche websites and know what they are offering.
Third, ask them to send a few of their previous work sample and compare the quality if they have used the same kind of approach or they are actually telling you the truth.
Fourth, See where their own website is getting ranked on Google. If one can not get their own website on top, how they will get yours!
Fifth, be proactive in the whole procedure. Yes, even after you decide to work with some agency you must not completely depend on them. You must watch their each and every move, because initially, all SEO companies will perform great work for your website, once they gain your confidence they will try to exploit you. So, prevention is always better than cure. My advice will be to be attentive and check each of their work and question them about the use and importance of performing each and every task.
With these easy tips, you can achieve your desired results with the help of your choose the best SEO company!
All the best!