How and where to look for artists for the project?

At the moment, the task is to find a company that could help create a presentation for the project. In the past, there were tasks in finding a partner for website design. In the future, there will be questions about where to find an advertising agency, etc., etc. ...

Are there any projects on the network where you can find professional performers for your tasks? Where it would be possible to discuss this or that next job, get advice, recommendations, compare one company with another.

The question is about professional teams. I understand that there are geniuses among freelancers and I will never be against collaboration in this format, but it is the discussion of companies that interests me.