There are lots of cryptocurrency are created in this situation but still very some of them were interested by the people to invest so how to promote the remaining coins to reach the people to invest.
I would advice making use of social media to make promotions especially using youtube videos and google ads, this is because running ads on this kind of platforms is easier.
Though for best results, you can make use of bitcoin ads platform like coinmarketcap, cointelegraph because you are sure to get, only those into crypto visiting your website, which will bring more conversion rate then showing ads to random persons on social media.