It seems that something is wrong, I just uploaded the game today, and I only have a rating of 1 star... Is it really necessary?
I'll not say that you have to fully discard negative comments, but you have to learn to discriminate between criticism and just hate venting. But...
I mean, I understand that my game isn't perfect, and that it's in development, and obviously lacking content, but does it really deserve 1 star?
Well, if what the guy said is true, I have to admit than perhaps it doesn't deserve a 1 star, but it don't deserve more than 2.
The difficulty balance is the most important point in the kind of game you want to make, and in yours it's clearly totally off. This make the game unplayable for most people, and therefore impossible to enjoy.
Like the game is only at its 0.2 version, he should probably have said it in the thread, and not as a review, but the criticism stand and is legit.
and I'm seriously asking this, I'm starting to think that maybe my game is absolute garbage.
It's not what he said, he even said good things regarding the CGs.
Your game have a flaw, he pointed it, now it's your job as creator to fix the issue and make you game better.
My game was forgotten and I quickly stopped receiving visits...
What isn't surprising if your game is mostly unplayable due to the wrong difficulty balance.
Do you really think that Call of Duty would be a major franchise if only luck would permit you to pass the first fights ?
This apply even more for adult games. People play them for their entertainment and lewd value, not for their challenge. You aren't facing hardcore gamers who want to prove the world how great they are at what stay a hobby, you are facing people who want to pleasantly fill a moment in their day.
[...] is it advisable to take a break for a few days and start another project that can be successful?
No, because if you do so people will remember your failure and don't even try your next game.
What you have to do is to works on the pointed issues.
Balance your fights for them to have a progressive difficulty and stay winnable ; ideally, for an adult game at least 90% of the players should be able to win without real difficulty.
And either speed-up the fight animations, make them interruptible, or offer a configuration option to not see them.
Do this, and that 1 star critic will not have anymore reason to exist.