Play event contracts, losing a year's salary in a month.
To say that event contracts are scams is completely unrealistic.
Event contracts only have Bitcoin (BTC) and Ethereum (ETH).
Their prices are very difficult to manipulate artificially; event contracts are a particularly fair gambling game.
The losses of cryptocurrency friends are entirely due to their own greed; if you only play with five dollars, watch the market, and do not play for 10 or 30 minutes, playing for an hour or a day is very hard to lose.
Initially playing with five dollars, then later playing with 250 dollars, is entirely due to one's own greed.
Advice: Play event contracts with just five dollars, do not upgrade; upgrading will definitely lead to loss. Human desire is endless; if you upgrade to ten dollars, you will want to upgrade to 250 dollars. Be long-term oriented, watch the market, and prioritize entertainment.