Here are you found the information about failure of Scrum methodology and my own research about it.

1. The Main Point You didn't Find
out In Scrum Master Training

2. This piece of information originally related to my industry experience, in
industry lot of Scrum team work differently and produced different
results. Many Scrum teams work and produced too much effective
results but many others teams didn’t complete their goals.
Everybody associated was qualified, very enthusiastic and every of these
had worked together properly on past jobs.
I started thinking and research about all the successful and not
successful scrum team. I assign some same type of projects in different
team and said them to develop these projects via Scrum development
model.

3. Reasons of Successful Scrum Team
This scrum team work and operated very efficiently.
Team respect each other and their works.
Scrum Master extra ordinary efficient.
Scrum Master have the team management skills.
Scrum master efficiently handled disruptions and disagreements.
Scrum Master has good working relation with others team
members.
They had become a close team over the past six sprints.

4. Reason of Unsuccessful Team
This Scrum team had lot of disagreements each other.
Scrum Master not capable to handle the team.
Scrum Master have very poor management skills.
This team change their team members day by day.
Scrum Master has less knowledge of group development.
Scrum Master not follow the standard.

5. Note:
Scrum is an agile methodology its necessary to done agile certification
before started working on this.
Therefore, when you, like a supervisor, want your Scrum teams to thrive,
be sure your ScrumMasters receive leadership coaching, coaching and
mentoring so that they know how to work with folks in groups. They
must come to be comfortable with carefully shifting the customers with
the groups throughout the phases of group advancement as promptly
as is possible. Or else, you could possibly grow to be discouraged
because of to the lack of outcomes from your groups.