To obtain skins through the Steam trading system, your account must meet several requirements.
Make sure your account has:
1 Steam Guard enabled
2 Public profile and inventory
You can spend all your savings on these cases and in the end get a bunch of garbage. But you don't give up, because next time you will definitely win. However, all your friends have already stopped talking to you because you constantly bore them with stories about how you almost won something expensive in the GGWIN case. But that's not all! When you spend all your money on this game, GGWIN will laugh at you, adding only the most useless items to these cases. Someone will get an expensive rifle, and you will get a pack of cheap stickers.