Base on your screenshot, This is normal for ERC20 tokens since it has a huge transaction fee around 4-5$. It will be inefficient to allow withdrawal that almost 50% of the transaction amount will be the fee. Ethereum tokens has an insane transaction which is the reason why they set minimum withdrawal for that specific tokens.
Use TRC20 network instead if you want to save fee because all tokens that runs on Ethereum blockchain has that kind of huge fee. Does TRC20 USDT has same min withdrawal amount? Other Casino typically set 5$ min. withdrawal amount for TRC20 USDT.
Yes, I didn't notice that right away Sir, I should choose the TRC20 network because its transaction fee is only 11 TRX, it's only around 0.6$-0.7$.
Because I play on this gambling platform most of the time, I can't gamble here using usdt because all I saw was 19$ but I didn't notice that it was ERC20 that's why it's expensive.
Anyway, thank you sir for saying that, I was just thinking about a lot of problems so maybe I didn't notice it right away. God bless you and have a nice day.