I overstayed my visa for a few years but I'm currently 17. Would it affect a minor differently? If I return back home to apply for a new visa, would I automatically be turned down due to my previous overstay? Are there any other options to get any sort of green card/visa?
You don't accrue "unlawful presence" while you are under 18 for the purposes of the 3/10-year unlawful presence ban, so if you leave before age 18.5, you won't have a ban, so you won't be "automatically" denied a visa. But not having a ban doesn't mean you will get a visa. Even if you didn't have a ban, you would still be very likely to be denied a nonimmigrant visa like a visitor visa, because your long overstay makes it hard to convince the officer that you don't intend to immigrate.