Ok, so I live in South Korea and gyms here are freaking expensive. I can only afford membership to a small, pretty ghetto gym. There is no squat rack, only a smith machine for me to do squats in. I know it's not ideal, but is it okay to do squats in the Smith Machine if there are no other options? Or is it dangerous, and I should just not do squats at all? Is there any other way of doing squats without a squat rack or smith machine?