The Agile Manifesto says "while there is value in the items on the right, we value the items on the left more". For many, that means "we are already doing the items on the right, so let's add the items on the left to become more Agile". So they start looking for practices to add to what they are doing. They think that will increase their agility. They don't realize that it's first and foremost about a change of mindset, a different approach, and a different set of values.

They are trying to do things differently but using the same values and mindset. Changing these requires time and effort. You need to read about it, practice, and think about what you are doing and why. There are a lot of resources that explain how you should do it, what anti-patterns to stay away from, etc., but it takes time and effort. Unfortunately many are duped by the large plethora of certifications that exist on various Agile methods (mainly Scrum) and once they get their fancy piece of paper and frame it on the wall they think “that is it” and they know what they are doing. So they stop learning and at best they end up with a hybrid that’s better than what they were doing but still far than what they could still be doing.