Note that the preview images should not show any features that aren't availabe here on OGA. Per site submission guidelines:

"Your title and preview images must be descriptive of the content you actually uploaded.  Specifically, if what you uploaded is a sample of a larger pack, the preview image must describe the art you actually uploaded to OGA, and not the additional art that you are advertising.  It is fine to link to the larger pack in your description."

EDIT: Fixed, thanks! :)

Didn't come from a meme, but did the audio come from AI in any part?

If you have a series of these themes, I recommend uploading them together on one submission as a set that goes well with each other. Individual submissions with one theme on each page is less useful. Also, these seem more like "music" rather than "sound effects".

@maor6480: I believe the skeptical responses you are getting are due to your post looking very similar to a free labor scam.

I am confident you are not a scammer, but your post does come across as somewhat disrespectful and entitled:

• You are expecting professional, high fidelity work ("graphic designer at an HD quality level") but don't feel such professionals deserve any compensation ("unpaid")
• Sometimes artists are willing to work on an interesting project for free, but never one where the artist gets nothing, while other members on the project get compensated.
• You mention expenses ("This is a very expensive game") so we can assume you have a budget and funds to spend on this project, you just aren't willing to do so for the quality labor you're requesting.
• There is no way for artists to know if they are a good fit for your project because you don't mention any details about the game, what the art style is, or the scope of work. Expecting artists to hunt for you and contact you in private to discuss 'secret' details just to determine if they're even interested is disrespecting artists time.
• Insisting the project is urgent, but not saying why or giving any other details is a red flag for most artists. It tells them that contacting you would most likely be a waste of their time.
• Artists are not able to contact you in the manner you have specified. The discord information you have provided is unusable. "maor7583_70638" is not a valid server invite, and it is not possible to contact a specific user on Discord unless they already share a server with you. You are not a member of the OGA discord server, and any other servers shared with users here would be... miraculous.

I don't say this to be mean, just to let you know why you aren't seeing any positive responses. It may be a good idea to read https://opengameart.org/forumtopic/how-and-when-to-write-a-good-art-request in full and heed the advice therein.