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Converting it on another coin would really a good move but expect amount would really decrease in exchange on having less fees on transfers but we do know only few gambling sites do offer such thing that they have some coins to be converted as you like. 500 sat to 100k sat is really hard to think off but its really possible depending on how lucky you are but in myself i cant really do it since i do suck on playing dice even on faucet amount.
Yes, only a few sites like that, with Crypto-Games.net being one.
It's great,especially with bitcoin fees as it is right now, the site supports multiple altcoins and an onsite exchange. Quite simple exchanging your btc to other cryptocurrencies.
And, btc to alts Minimum Exchange amount is only .0002
BTC. And currently, altcoin fees are lower and confirmations faster.
Still, you gotta turn that 500sat to 200ksat first, which is a feat. Better option would be leveling up the account first, higher faucets, easier.