Do I need to split the site when adding similar topics?

Question

Search Engine Optimization

Hello, at the moment there is a fastgg.net project
In 2 words - I provide services for game pumping of the cs go online game
At the moment, only services are presented on the site. At the moment, it is required to add educational and simply useful articles on the same game, and they recommend me here to create a separate domain / site for the whole thing, so that there are no intersections of topics, etc.
Question to experienced SEO gurus - How optimal is the expansion of one project "fastgg. net" from a regular site for services, under a more multifunctional one with additional sections of articles, etc.?
Thanks for the answer

Answer 1

more pages - more traffic
, but if you manage not to combine sites at all (including accounts), there is a chance for even more traffic