TA never worked for me. At least on crypto market. I've never tried stock or forex.
TA has worked for me a lot of times than it did not work. The problem with a lot of wannabe traders is that they always expect 100% possibilities of a market moving in their favor when using TA but in the real sense, things just do not work this way. You can expect that the market will move one way and then get to see it another way. One thing I have known though, is without TA you will still be making worst decisions anyway so what is the point trying to avoid it?
If it works for you than go for it. Its all about to earn.
For me it never worked. I started trading on stock market, found great up-trends and jumped into them - trends was easiest for newbie. Few days after it appears to be the last day of uptrend and downtrend started with me on board. Normally i would sell but i found closest support which was only few % lower. I decidet to hold and i was right. It bounce from support few %. I was happy for few days and than secon wave started... TA says that we are in unptrend currently. But dont says when will uptrend end. That was my first lesson - trends are made to be break and all of them will be broken someday and you will never know if it isnt now. TA is not only trend. Its patters, average, fibo, RSI, boll and dozens of indicators. I've tried them all.
After 2 years on stock i moved to crypto mainly to gain experience faster. Here i can trade on 15 min candles with the same volatility as on 1day candles on stocks. I made thousands of trades. I found strategy that works for me. Its just price. I buy cheap coins from panicked investors and sell when they come for their coins. I didnt stop do AT analysis. But only to know when will AT lovers buy to see what volume will they made, to know who is on market (low volume bounce made in TA buy oportunity means that TA lovers are buying - if there is no whale on market it will stop, volume will dicrise and few min after that price will continue to drop and accelerate on AT sell oportunity hitting in AT lovers stoplosses).
Ask my whife now. When she come back from walk with my son and see me eating my desk with fury in my eyes. There is allwais the same reason - i tried to give AT one last chance and... again whale raped my ass by showing me pattern which looks like from TA book with indicators screaming buy and huge red candle after my buy offer. For me TA works in 30-40% (just like you said - not alwais) but it makes it more useless than roling a dice (1-3 buy 4-6 sell - 50% accurancy). TA sometimes works... coin toss too. Everything sometimes works. Even if you buy alwais in monday on 9:15 and sell in thursday on 10:47. It will also work sometimes.
1-90% traders are loosing
2-If 10% of traders are winning they have to win 10 times more that those 90% lost - the only explanation is that they invested 10 times more - they are whales
3-most of investors are using TA indicators (common knowlegde - evey traders first thing entering trading is learning TA)
4-If whale want to earn he will try to earn on 95% TA lovers traders or 5% non TA traders? If TA gives sell singal is the best option for him to buy coins without pushing price (hude supply). If Ta gives buy signal its the best moment for him to take profit (huge demand) because most traders use TA now. And most traders have to loss to make whales win.
5- in 1920 most of traders didnt know what TA is. Thats why using it for whales makes most of traders loss and for them win.
TA works for trading bots but its like pump and dump singal group. TA buy indicator, TA bot buys in less than second pushing price, TA lovers are buying pushing price, TA bots are selling to last TA lovers.