It sounds like a lot of unrelated melodic ideas mashed into a single song, and I also hear characteristic Suno AI vocals, with intonations on the wrong parts of sentences and emotion sorta off-key.
I'm not sure how you managed to extract them semi cleanly, but Suno vocals just sound really gross to my ears, no offense. As someone who uses AI vox of my own creation via Replay AI and singing them myself, I understand the draw to pre-made AI vocals that sound basically already mixed and essentially write the melodies themselves. It just doesn't sound natural on serious material. Maybe for a funny meme it might work, but for a scary intense FNAF song, they aren't doing it!
The bass throughout this song seems to hold the same note no matter what is going on around it. I recommend learning some song structuring and chord progressions in order to make things more interesting.
I wish I had more nice things to say about this track. The mix is not too bad, for instance. It's just that to me, none of the other elements really seem to be coming together to give it vibe and groove. Definitely recommend going back to the drawing board and studying your genre of choice, which looks like dubstep, and seeing what makes it work!