Non-native English speakers don’t have this problem because they actually learn proper English. The problem is people who speak it naturally and don’t give a damn about proper English. After a certain point it becomes less inclusive to spew out near unreadable gibberish like the beginning of your reply.
No, at least in the US, you can only back up your own ROM if you own the game, not download someone else’s backup. The real problem here is that Nintendo’s (idiotic) stance is ALL emulation/backups are piracy and here they are being hypocrites about it.