FreeBitcoIn, Binance and CEX are good but they do not support the lightning network.
If you're looking to find an exchange which support lightning network, you can check in this list
https://github.com/theDavidCoen/LightningExchangesWhat the hell you're using Freebitco.in as an exchange? it's a faucet and casino site.
Maybe some P2P options might help since you are allowed to choose which fee rate you want to use and execute your transaction
If you trade via direct P2P you will not pay additional fee, but if you use a P2P site, usually they will charge additional fee. Usually the fee is low, but the rate isn't 1:1. In CEX you're trade with the actual rate, mostly trade in CEX is more profitable than P2P site.