Any Tips For Launching A New Product?

I’m pretty new to Amazon and have four different product ideas, but I wasn’t sure if there’s any demand, so I just bought a small quantity on Alibaba to list on Amazon to resell, and then I was going to private label one if there is demand. Two of the products have generic packaging but they are cheaper than all my competitors and the other two actually look nice and are priced similar to their competitors. It’s been over a week so far and….no sales and also almost no page views. I am going to switch from FBM to FBA for these products to see if that helps but am wondering if you guys have any other tips?

Right now I am marketing one of the products on TikTok but that hasn’t worked. I also don’t see how ads can work as a new product, but maybe you guys have a different take? Two of the products are $9.99, one is $45, and one is $75. What else should I be doing?

Also, if it helps, the products are in the beauty space but are somewhat niche. For example, one is a ball deodorant for men (like Happy Nuts) and another is a full body deodorant for women. Both categories don’t have many competitors but are dominated by a few big players.