my money couldn't sustain the time frame for my little fraction of $500 btc ? If this happens does it means you're lost or you've your coins?
You bought $500 worth of BTC and it became $0, how could that happen? The value of the Bitcoin you bought might have dropped right now if you bought it when the price was high. But Bitcoin would still be in your wallet, it can't become $0 during the current dip. There must be something wrong with your wallet or the coin you bought. Are you sure it's a BTC coin?
The OP keeps us guessing about what he's really asking.
Because if he invested in BTC, even if he bought it at the highest price, as long as he never sells it, it will never reach $0. Moreover, considering the ATH price last year to the current price, Bitcoin has only decreased by 50%+. So he should still be holding $250, not $0.
There are two possibilities: he lost wallet access, such as losing his seed, exchange access, or perhaps he was phished, making him think Bitcoin had reduced his assets to $0. Or perhaps the OP meant he bought an altcoin for $500, and it happened to be a pump-and-dump scheme, causing his assets to fall to $0 due to a rug pull. If this is true, it could happen because so many altcoins cause losses because their value plummets to the point of being completely worthless. That's why we always say, especially if you're a beginner, that it's better to invest in Bitcoin rather than altcoins.