So thx so far for the replys. yeah my fault that i didnt mentioned some softwares.
So what i got (typical steam sale lets buy it, maybe we need it one day :D) is RPG Maker MV, Pixel Maker MV, Unity of course and GameMaker 2 i have the Free Version downloaded now (its free to use, just if i want to export it i need to buy the license depends on for which plattform i want to make the game).
And what i meant with "NSFW Plugins" is what i said already that in some pixel plattformer hentai games the animations (and sometimes the monsters) looks in all games the same. Thats why i thought that there is maybe a NSFW plugin with such kind of animations and monsters for a "easy start to make hentai games".
But yeah then i have to test around a bit, learning coding with C# i was also interested but wanted to have a look first in GameMaker 2 or whatever i will still find then :D