This one is the strategy that I use most because it's easier to use and can be highly effective, the only downside to this strategy is it could be less profitable at times but considering how much it will minimize your exposure to risk it's totally worth it.

For example you can buy the equivalent of 10% of your capital a token/coin that you think will go up in a few days period and if it just kept going down you add another 20% and if it went down again another 30% and so on, but if after the first 10% that you bought it went up in price you can just as easily sell and then switch to another coin/token and use the same strategy there, again it will give you less profit but it's more safe and guaranteed.