Yeah EWQLSO Gold is actually over 10 years old. I have it and rarely use it at this point. That’s not to say that there aren’t some nice samples in there cause there are. That library would sell itself better in a fuller arrangement where multiple instruments maybe double each other where some of the inhumanness gets masked. Your arrangement is super isolated and minimal so that makes it that much harder to effectively fool the listener in hearing something that doesn’t sound mechanical and unrealistic. Unfortunately, that’s what you hear when you listen to this piece. I would check out some other similar music on this site that has been successful and compare it to how your sounds. Try to improve in mixing and orchestration and you’ll be fine. Here are a couple pieces you can listen to get you started: https://audiojungle.net/item/halloween-fun/5624745?s_rank=15
https://audiojungle.net/item/spooky/13325785?s_rank=18
https://audiojungle.net/item/spooky-halloween/13033798?s_rank=22
Hope this helps! Best of luck!