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I'm guessing that it has to do with all my games being adult games.
I'm sure there is some setting somewhere to allow you to see NSFW stuff.
I tried searching for my games (and the games of other adult developers) while not being logged to the site and I never got any result.

My guess is that this is done to prevent minors and people that do not want to see adult stuff from stumbling upon it by mistake.

yes you are right there is a setting for "Show content marked as adult in search & browse" when logged in

but itch.io is strange,  when  not logged in , going through "browse games" on the main page and then in the "select a tag" in the drop down menu there is "adult" selection and it shows some games that are considered adult, and they show warning when trying to play them, but are still accessible , need to "investigate" more >_>; , just noticed now it shows some of  your games, but selecting "bara" doesn't show anything very strange

anyway sorry for bothering , and thank you  for the reply :)

your game is awesome 

No problem, it's good to find out about these quirks itch.io has.