First of all, you can't be a professional trader without learning technical analysis. yes it's true it can't predict the future, but it teaches you when to enter a trade how to close your position if the price goes against you with minimum loss and allow to trade base on data, not on some emotion feelings. Fundamental works for the people with good, it's good for long term investment, as a normal person must learn technical analysis and do swing trading if he wants to increase his capital. About your question, how about learn everything that can be useful for you since you want to be successful trader.
Technical analysis is only the first step to become a successful trader. on top of that, you need various tools to analyze the market on a deeper level than your own brain. Computers are able to detect trends and patterns in market charts that we are simply not capable of understanding. The top traders on the world are using these softwares to make millions of dollars on an everyday basis.