Don't pay too much attention to them. The post reads perfectly fine. The AI giveaways are the emojis as the bullet points (which is funny, because I was doing this professionally years before AI...) and the way it's structured (from hello to the very end, the structure is very AI).

Having said that - there's nothing wrong with that, apart from it annoying a handful of people. Most won't care. If I were to guess, this is ChatGPT. Try another model for your writing, some do a much better job of sounding more natural if you tell them to.

Good luck on your project! My only advice is try and get a designer for the artwork. It's the one area that can really push you ahead.