I am not against the use of intuition as it is known that humans can take decisions in a split of a second with more accuracy than even computers which are calculating many factors during that time, the problem is that many people only use intuition and they do so when they are newbies, intuition develops over the years and as you get experience, so it is my opinion that a newbie trader should rely 100% on their strategy while an experimented trader can make use of some of his intuition from time to time.
Good point as a beginner it's a good practice to work with your own strategy, you will learn a lot if you seek for deeper knowledge even those losing position will have a good value to keep improving your skills, along the way you'll be able to established good patterns that will allow you to have a better chances of making a winning trade.
Changes from each strategy depends from the situation. Adjustment can be done to follow the concept of making good system to continue
moving upwards and create more working strategy.
The more we got into actual trading, the more gained learnings, and it was far when we just read and watched tutorials. Making our own strategy makes us more knowledgeable and a way that we need to explore the market gathering ideas. It become natural to change or diversify our strategies due to the market volatility and it was a need for us traders to adopt or adjust to the said changes otherwise, we got left behind and lose our trades.