IIRC, in binance you can be listed for free if the project you'll propose to them is really one of the best and they've seen the value for your project.
Usually, the exchanges that would list your project for free don't have good credit and volume. And it is likely that there won't be any contribution to your project upon listing there. Good exchanges come with a price and if you're struggling to get in there since you're just starting, if ever you've been listed to exchange for free and you're already seeing the positive impact on it, put it on your shortlist to be in a reputable exchange even if it's with an expensive fee.
