How is a proven method besides being a big influencer? To sell out the entire presale?
I built a special dapp[/url], (https://surfer.lol) which is based on a presale contract that I created myself.
But I need promotion and this is the most difficult point. Because my product has a vision and, as I said, technical background.

Telegram ? - All groups are spam. The best are alpha groups, but how to reach them?
Twitter ? I bought premium and I will be sending replies to big accounts and popular threads
Youtube ? I bought an ad, but 1000 views is 8 visits to the site.

Do you have any other methods? How to reach a specific community? to sell about 40 ETH ?
That's only 40 people at 1 ETH each.