You have to give something to gain something back in return, developers have to earn back for the service they provide users wordwide so nothing is for free in this world, if a project is doing free work go back and recheck very well because that is impossible, and of they do free services like zero fee the project won't last long
agree that right word to use use is less-fee there many crypto now that more cheaper in terms of transaction fee . eth and xrp as less fee compared to btc.