How Scrum as a Framework Can Contribute to Team Morale | David Tzemach
Morale has a decisive impact on the team’s performance and productivity. In a Scrum team, this factor becomes even more critical due to the nature of the self-organized team, based on five main elements:
Respect among team members.
Commitment to shared goals.
Collaboration that increases synchronization.
Increased communication.
Trust.

As an Agile driven framework, Scrum provides a solid ground for teams to utilize their full potential by embracing the concept of the three Cs:
Collaboration - The nature of self-organized teams has a significant contribution to the team’s morale due to the ability of each team member to equally influence the project (which reduces the amount of ego involved along the way).
Communication - Increased communication among the team members using specific meetings (planning, dailies, refactoring etc.) helps team members to increase information exchange and narrows the chances of miscommunication.
Commitment - In Scrum, the team determines the work they commit to deliver at the end of each sprint. This commitment allows the SM and PO to increase the team’s morale by just doing simple things such as:
Celebrating success and showing appreciation for their work.
Being patient and understanding about their failures.
Letting the team participate in major project decisions.
Allowing the team members to share their thoughts and express their opinions.