For condescending know-it-alls who think the average person that just
plays RPGM games and doesn't
make them should know what a ruby maker is. Please, tell me more about all the different RPGM engines oh great and wise lurker with 500+ posts.
The Ruby Engine is just an older engine.
It was used for all RPGMaker games before RPGMaker MV and MZ. But you needed to actually install some programs on your computer to play them. Given you can already play the games, you probably already have it installed.
In which case, you can consider using AGTH and Translation Aggregator.
Unfortunately, both of those have discontinued support. Which is how MTool got in. It's constant updates is the exact opposite of those other tools.
Google Translate also has done some trick to their API to detect automated messages being sent, so those tools will start failing after about 5 minutes. After which, you need to wait hours before it un-blacklist your IP for botting Google translate.