Technical Analysis is useless if you have a negative attitude on trading, improve also your attitude and your decision making in trading. Yes, TA works but its not enough to become a successful trader, there must be a missing recipe if you are not feeling well in trading. Dont think about how to be good, TA doesnt make a good trader but if you focus to learn then you can succeed.
Negative attitude on trading? I think that is not about technical analysis nor fundamental analysis. That negative attitude is about ourselves, nothing to do about the technical and fundamental analysis.
I know a lot of people who are successful in trading because of only technical analysis, they only based on the chart. As far as I know, there are some traders in crypto which don't care about the use of crypto they are trading because they trader because on what they see on the chart and they are still making huge money.