There are many lists
[1] [2] that show you managers, prices and how to manage your promotional campaign, so you must be more accurate and specific to know which of these managers is suitable with you, such as, the duration of the campaign's continuity, how to pay, the number of subscribers and other details.
If you are going to pay in BTC/top Altcoins, you will find many users with high-quality posts, but if you are paying using unknown coins or your tokens, your chances will be greatly reduced.
[1]
https://bitcointalk.org/index.php?topic=5266629.0[2]
https://bitcointalk.org/index.php?topic=4412712.0
