Sorry, man, but that's now how you earn money in this niche. There are relatively popular NTR, mostly netorase works, that are made using AI art that get dozens of 5-star reviews on f95, all they have is high quality AI art and a story premise that has a lot of potential. There are also other games that use relatively free assets, like some wildly popular games of different genres that use Koikatsu, or Honeyselect models, that can be used for free. You chose a very wrong approach to succeeding in this niche.
The way to earn money with a h-game is to make a working alpha 0.1 version with about an hour of content or less using free tools and trying to hook people with the premise and your writing. If you aren't from a first world country and earn six figures in $$$ and thus can't just risk spending a few thousand bucks for no return, you should never spend more than 100$ on your first project. The main deciding factor if your game will succeed isn't even its art and definitely not voice acting, the latter being absolutely irrelevant for the vast majority of people while costing the most. You'll already be ahead of other developers if you just add cute moaning bgv, lol. Instead, the main factors are the story's premise and quality of your writing.
What I would've done if I wanted to succeed with an NTR game nowadays : I'd made a few short alpha versions of different games with different premises, definitely would choose netorase as nowadays it's the most popular NTR sub-genre among English audience, and then see which of the alphas was the most popular. I'd use only relatively free resources for art or hire some AI artist who could create good art for 1/10 of the price if I was too lazy to learn how to do this myself, or, more likely, use Koikatsu like the developer of the King of Summer, one of the most successful NTR games made by a westerner, it also allows you to add animations which are important for a certain category of people.
But beware that if you're going for a niche market like NTR, then even earning just 1-3k$ per month on Patreon is considered a "great success". That's the reality of the market, that's how much the "top developers" like Hangovercat earn, and you won't get there in a month or even a year. Honestly, if I wanted to earn $$$ as a h-game developer I'd stay away from straight NTR, making something more mainstream and then adding completely avoidable NTR as a bonus content and for my own satisfaction, I'd even add a "skip all NTR" option to not turn off an average player.
