As we are having less chances to advertise like 2 or 3 times, it is difficult to attract into game room the players who joined newly into lobby. And mostly newly joined players fill the rooms. As there is less vacancies to fill the room. Because there would have been 2 or more rooms on the same map already we cannot attract old players.

You can use the lobby chat in order to advertise your game.

you are not trying to understanding me, I clearly mentioned my suggestion "advertising more is needed"

Please re-state your request.

If there is chance to advertise more its better

It is just a suggestion and feedback.

I hate all those game invites from all those unknown players for maps I never play, so less is better... not more..

There is a lobby chat for inviting players to your game, use it...

You create a game room with a game title (for usual the map name) and the game description (game settings, rules, other information) which is visible to everyone in the lobby. Additionally you advertise your game in the main lobby chat which is also visible to all players. This is how it works for the past 25 years.