However, if you have a budget for a marketing campaign, you can, for example, pay the users of this forum for placing your service ad in their signature and it will be displayed under each post they write. This is a very popular form of advertising of crypto services - look at my signature
So, the highlight of the promotion is a signature campaign?
I'm not saying that signature campaign is the only one way to promote any crypto related service, but from my observations it is probably the most popular (next to social media) option for promotion. Maybe if it was a phase of attracting investors, it would be better to look for them at international events, but when it comes to attracting users and traders, signature campaign may be one of the best ways.