Can I Use Other People’s Custom Skins in CS:GO?

Actually, while you can't directly use someone else's custom skins, there's a whole ecosystem for trading and purchasing skins. So if you see a skin that someone else has and you really want it, you can try to trade for it or buy it from the Steam Market. It's not the same as just picking up another player's skin, but it's a legit way to get your hands on that cool design you saw.

Nope, you can't use other people's custom skins in CS:GO directly since the game doesn't support sharing or importing custom skins from other players. CS:GO is pretty strict about its skin market, and all skins need to be acquired through in-game means like opening cases, trading with other players, or buying them from the market.