I only really bother posting about my games here, the old forum, the Gambas-One forums and lately also on Opengameart.
I should probably get around to hosting on itch, but since I don't offer native Windows versions (Gambas only runs on Unix-like systems) there does not seem too much of a point in pitching to the general gaming pool. I have been meaning to see how well my games run via WSL on Windows 10 and 11 though.
I had the honour of having some of my games uploaded to the Internet Archive. My 3D games in particular have even gotten a few favourites.
https://archive.org/search?query=creator%3A%22Piga+Software%22
Honestly have put more of an effort to promote a free content science fiction comedy audio series my brothers and I do, but have only had limited success with that as well on YouTube, the Internet Archive and a few audio drama forums.
http://icculus.org/mwm/rover/index.html
By far my most successful projects from an audience perspective have been my various wiki projects for old school videos games (Blood Wiki, Catacomb Wiki, etc), but they have a pre-built audience. Likewise my brother has a fairly popular series on GamingOnLinux where he goes over old Linux games.