Their are millions of users each day on every social media platform so having access to reach all those potential clients makes your ads that much more likely to convert. These social media platforms also have advanced targeting methods so that you can reach a very specific audience.
Most social media platforms all you to retarget accounts that have viewed one of your organic and paid videos which gives you the ability to be top of mind in front of your ideal customers. This consistent reminder of your brand will also build trust with those viewers and eventually they will buy from you.