Customers chose free. Maybe not you individually, but not enough people are willing to pay when there are free options, unless the developer is already known and has a niche. Long ago I published a paid, then free, versions of an app. Even when ads were not as well optimised, I earned more money from the free version. I plan to release new free games with ads soon as that is the only viable option for me, and many others. I don't feel it is a bad choice because free has opened the joy of playing video games to many newcomers. It is not a solution for everyone, but there are other ways to play.
Apple Arcade is a chance for developers to earn in a different way. I applaud Apple for trying, but there are not enough games by far. A player will only want to play a subset of any given group, so the selection needs to be far wider than any individual uses. It is also unclear if the people willing to play matches the games offered. Hardcore gamers are willing to pay, but their desires are probably better met by console and PC anyway. But even if they wanted a mobile supplement, I don't think Apple Arcade is for them, and maybe couldn't be with mobile controls. Does any other group care enough to pay? All the Apple Arcade games I have tried feel casual, slightly headed towards mid-core. Is that the right market to target? Is any market? I hope so as more options means solutions for more players, but I don't think their needs will be met yet by the amount or variety of games on offer.