Apart from the numerous merits of SEO, there are also some drawbacks to SEO:
It takes time through SEO to rank higher.
One of the major drawbacks of SEO is that you have to compete literally with the rest of the internet.
According to Google’s guidelines, if you are doing SEO wrongly then you would have to penalties for your actions.
You will not get profits from the first day, it will take much time to be profitable.