The wallet you play from should never be the wallet you keep. One takes the risk, the other stays out of the room.
A play wallet touches sites, approvals and the odd mistake. Every connection is a small exposure. If that wallet only ever holds a fixed play amount, the worst case is known in advance. Your savings wallet never signs anything, so a bad session stays a bad session and nothing more.
It also keeps your records clean. Play activity in, play activity out. No digging through savings history to work out what a night cost you.
Create a fresh address for play. Load it with a fixed amount you have already decided you can lose. When you win, move the win out the same day, back to the wallet that never touches a game. Do not park balances on the site itself; a balance you cannot see on chain is a promise, not a holding.
Watch the approvals you sign. A site asking for unlimited access to a token is asking for more than a deposit. Decline, or cap it to what you are actually staking.
Load what you can lose. Move what you win. Never sign from savings.
If you would like to learn more about the technical workings of provably fair algorithms, you can download the whitepaper.