Use a small amount even if you have a big budget.
The strategy of distributing money in three parts, it has been done from the beginning by those who trade, especially in spot trading on a long term.
That is if you have $ 1000 money trying spot trading in Bitcoin you can use three stages.
1. Say the price of bitcoin from the price of $ 100k down to $ 95k you can buy 30%.
2. Bitcoin price from $ 95k down to 85k you can buy 40%
3 .Last $ 85k down to $ 75k you can buy 30% more.
Total: 100% No need to explain your profits you can set your own profits, yes it is better if you do, rather than margin trade or futures.