RustBet is a fairly new site for RUST skins gambling. It has a lot of active players and cool games. It was created in 2020 and is actively developed. There is a virtual inventory on the website, so you don't have to send a trade offer every time you want to join a jackpot or accept a trade offer with winning items every time you win, instead, you have virtual inventory, to which these items go, and you can deposit to it and withdraw from it anytime you want.
New users can claim a free case with a "csgocatalog" code. You can get up to tens of dollars from it if you're lucky.