There is a project (Internet startup). How to attract a venture fund?

Question

Startups

Hello everyone.
In fact, that was the question.
I apologize in advance if it may seem silly or banal.
There is a project (Internet startup). How to attract investments from a venture fund?
I really don't know much about this area. I read a lot, but as they say, the more you read, the more you doubt.
A startup is socially important, there are analogues abroad and small ones here. Investment is needed for marketing and, as a result, scaling the project. The project itself has already been implemented and is at the testing stage.