The easy way is done with a software called https://websitetoapk.com/ but you have to pay $15 to get it on google play, otherwise you can make many apks that are consider unstable in google play
The hard way is this: https://forums.rpgmakerweb.com/index.php?threads/exporting-to-android-mv-android...
The Apple IOS phones are way harder and require $100 per year.