If you really have the interest in trading, with time you will learn all the ins and outs of it. If nothing works for you unfortunately it means that you are not made for trading. You should better leave it if you are not able to learn after continuous trying. Instead, just focus more on the hodling part (on spot) and do something else for getting the income to dca again. Don't feel demotivated even if you fail in one thing, not everyone is same.
No one is made for trading but it only boils down to how consistent and patient we are. When hearing the word trading, the first thing that comes in our mind is to make great profits. No one in earth dislikes money because it is very useful and can make a life of the person better or happier so all should have an interest in trading but all are committed to it. We also have investing next to trading.
We can do both of them because investing does not need active monitoring but once you buy a good coin, you can just leave it there and open only your wallet after many years to harvest your profits. We can still be able to do a DCA even without constantly selling but we can just use our salary and other sources of income.