But for "trying" strategies, there's a back-test feature available in TradingView.
Yes, people who want to use trading scripts, bots, can do Back-Test and assess efficiency of the scripts, bots before using it with real fund.
It doesn't need to be for the use of trading scripts/bots. Systems traders can do their back-tests to find out if their strategies are feasible and profitable enough.
One example of a systems-based strategy is the Pi Cycle Top, and Pi Cycle Bottom.
DYOR!
Stay responsible = Use stop-loss
It's one of best weapons against massive loss in this volatile market.
One of the Best Weapons in Trading: stop loss order
Plus use less leverage, or use enough for a portion of your capital, especially if you're trading in a centralized exchange.