I think we need to completely separate the crypto money we buy for investment and the crypto money we use for gambling. Personally, from this point on, I will use as many USDTs as possible for gambling.
Alternatively, you may gamble the same currency with your investment by using differnt wallet. Through this way, you couldn't be able to abuse your reserved capital for your investment. Also, it's less hassle for you if every you hit the jackpot as withdrwing it into fiat wouldn't be a problem as you may transfer it to your main wallet. I myself is currently using XRP and BTC for gambling and investment. I couldn't insist using XRP as they cost less fee and faster also.