The tools I actually run my stores with, the accounts I study every day, and the one calculator that tells you if a product is really converting. Everything in one place.
This tells you if a product actually converts, not just gets views. Test-order their cheapest item, read the order number off the email, and drop the numbers in. It does the math the way I do it in my head.
Set your burner feeds to hand you winners. Follow these, search these, and like and save the good ones so the algorithm learns to show you products all day. Pick the type you want to run.
Like and save the ones that stop your scroll, watch them all the way through, and keep scrolling. Do this ten minutes a day per platform. Within a week your feed is nothing but handmade products going viral.
Like and save every product that made you go what is that. Those are wow-factor winners. Watch them fully so the platform feeds you more, and note the ones getting where-can-I-buy comments.
Look for products that fix a clear pain, then check the comments. If people are asking where to buy, that is real demand. Like and save those so your feed keeps surfacing problems people will pay to solve.