Learning materials or tools for trading were available for free via online or even in ebooks but we can't figure out how effective those learnings that we have gained if we wouldn't try or execute it in real trading. Trading can be learn by just reading but of course what we can learn from it was the basics only, the regulations, the do's and dont's but the real learnings that will give you an armour in trading was learned through the journey, skills and knowledge that you may gain here were solid.
Although to be fair, even executing tactics and strategies cannot tell you for certain how effective they are because conditions in the market can always be different.
Then you also have to consider conditions that are external. Your internet speed, your platform's responsiveness. Whether you are even allowed to be using the platforms! Small things traders completely overlook when attempting these strategies:)