$100 a month, four ways

Pick a coin or stock, an amount, and a start month. Set the money aside every month, then see what happened when you bought every month, only when the market was scared, only when price came back to its monthly band, or my way: half every month and the rest saved for fear and support.

Buys at each month's closing price. Stock prices include dividends reinvested. Fees and taxes are left out. Money waiting for a rule sits in cash and earns nothing here. A fear month for crypto: the Compass (Crypto Fear & Greed, from Feb 2018) averaged 30 or lower. For stocks: the VIX touched 30. The monthly band: the 20-month average and the 21-month EMA, bought when the close was at or under the top of it. Steady + dry powder puts half in every month and saves the other half for any month with fear or a close at the band. Past results, not a promise. Prices from Yahoo Finance, updated daily.