Well, while technical analysis could also help to give you (the trader) some hint in the trade, it doesn't guarantee that if you use technical analysis, you will actually make more of a successful trade. You also need to be familiar with the use and combination of some other trading tools, the use of indicators like the moving average, and their likes. You will also have to develop some good trading strategies; that's what will help you win the market, but even if it's not a 100% win, you will still experience some losses, but not as much as when you don't have as much knowledge about trading.
The thing about TA is that if you are not using it, then what's the alternative? That's why people use it, not because it's a guaranteed way of making money, but there is no alternative that you can do to make money from trading at all. Lets assume that you are not using TA, you look at a coin, and you are not sure about if you should buy it, or if you have any then if you should sell it, in a world where you do not use TA, you are forced to just simply make it by gut, just your feelings and nothing more.
This is why TA is a lot better and you should keep on using it the more you can, it should definitely make it to a point where it could make as much profit as you possibly could, and that means you are going to make as much as you can. It's definitely a good deal, and it's definitely something that will benefit you, and you are going to end up with a greater return with TA than your feelings, that should be the only thing that matters to you on the long run.