Even if you are a hodler you should know when to buy a coin and when not to. You can double or triple holdings for your coins. I am not a pro trader or anything but I am far from a noob and know when to buy and when not to.
You can make 1000% gains 10 times but you only need to go -100% once to lose it all. Don't margin trade if you don't know what you're ding. There is a guy who went from 3 btc to 200 btc to 0 btc. Pls don't be greedy(Its hard in crypto but you can try).
Remember, bulls make money, bears make money, pigs get slaughtered.
TA isn't the answer to being successful however and not getting slaughtered, some basic logic can pretty much guarantee that in the current market, buy low, sell high and always stop loss. TA is often over lauded and is really not too proven within crypto.