Struggling as new seller

I’ve joined this week, started with 30 products but haven’t sold anything in 5 days.

On the other hand, products I’m selling on eBay are selling nearly everyday.

FBM isn’t working well for me right now, Amazon puts you behind “see buying options” and even if your item is cheaper than the buy now box it’s not replaced.

I understand buy now box is something that can be competed against after 90 days, but how can I make any sales at all in FBM? Feel like very rarely a buyer will look at the “see buying options”

Any tips to help new seller? Thanks