Technical analysis doesnt really give out guarantees that it could give out precise predictions on where you could really take profit but somehow technical aspects is a great help on at least knowing on what you should gonna do basing with those indicators even though its not really that precise or 100% reliable but at least you do make out some analysis.
Unlike if you are just making out trading decisions without any basis then you are just simply doing gambling and its not a must thing to be done when you are
making trading.
Learn up things as much as you can because this would really be helpful in your future trades to come.
TA is not there to make sure that you make a profit %100 of the time, it is there to tell you what it "should" do and that's how you trade based on it. Obviously without TA you have no sense of what it "should" do, doesn't mean you could not profit, I am sure there were times when people didn't do TA and made a profit and people did TA and lost money as well.
The real difference is that when you do TA before you trade, that means you have a chance to actually get it right on what it should do when it ends up doing it. Basically TA is like a compass, it shows you the direction but it doesn't tell you what you will face while going that direction, you may have to go through a desert to reach your destination or you may walk 100 meters and reach it very easily, nobody really knows. Which is why it is quite important to know TA is not guaranteed profit method, but better than nothing.