Yesterday I bought a Nintendo Switch console for my son and I heard of that Nintendo Switch can be hacked to play free games with a USB driver，or dongle switch ? something like this maybe...anyone can tell me the truth if I should hack my switch or not, thanks !
Older Switch consoles can be hacked, newer ones can't cat this time. We can't help you with playing free games, however see if you can backup your Nand using this Digiex Nintendo Switch Nand Backup guide, if you can actually do that your Switch will be hackable, however I suspect its probably not unless you purchased an older Switch.