The AI stuff in general is going to be polarizing for a long time until people can't distinguish the difference between it and the real thing. From what I understand this is your first foray into adding audio to clips, so there's gonna be growing pains. Like your first project isn't gonna be perfect, so you just keep learning from here. But I ain't complaining about getting something for free. Its better than no sound at all for something thats been out for months and it seemed like no one was working on it.
For the most part the sound effects were fine for the Commander video, its just the moans and voices that are probably drawing up the uncanniness. You probably don't want to hire a voice actress to do the voice overs since that'll cost a lot of time and money, but if you want to improve the moans and what not you can probably look into grabbing the moan sound packs by the various NSFW voice actors out there. That's what most of the people who add audio to the animated clips dude like Audiodude, they literally just reuse the same packs over and over again(from various VAs) depending on which character fits what voice. Only the animators looking for specific dialogue/lines need to hire the VA for voiceover work.
You have to use AI if you want to tell your stories without needing to hire a VA, but using the soundpacks that the actual VA have out there will definitely improve the sound for the non-ai voiced clips.
The other thing I can probably point out if you want to improve or add to your audio work: add ambient noise/room tone. Even when you're in a room by yourself and everything is off and no one is talking, there is ambient noise/room tone. In the first scene that you have with her walking in, the door opening and the echoing of the heels in the empty room are great and help set up the scene that its just you and her. But a lot of the other scenes feel off. Your brain can kinda tell that things are weird when its absolutely silent outside of the added noises(this is why boom operators just record the set silent for a bit). You can see the scene and hear the sex but it sounds like its happening in a void, having room tone would tie the audio together and make it feel like its part of a cohesive scene.
A lot of the other audio engineers add a droning noise(
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) that makes it seem like you're in the bunker. Its making noise cause its a space station and its always on. Or if there are holographic screens in the back someone has like machines/computer noise(
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). Some people just add some quiet ambient music to break up the silence(
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).
tldr; don't let the haters get you down, look into the moan soundpacks from the nsfw vas(ex.bordeauxblack, ivywilde), look into room tone/ambient noise