What are the euphemisms for quitting the group?

1. I am about to leave the arbitration section (department), and now I am ready to leave the group and say goodbye to you. During the xxx days in the company, I thank the company, leaders and colleagues for their care and help over the years, and wish the company prosperity and development, leaders and colleagues and career progress.

I'm really sorry that I can't fight with you for personal reasons. I miss the time when we worked together. Sometimes I am tired but satisfied. Take care, everyone. Forgive me for not working with you. Goodbye!

3. All good things must come to an end. I am grateful that I have been here and let me know you, but I will quit this group for some reasons. I hope everyone will get better and better in the future!

Meeting is not the beginning, and parting is not the end. Thank you for all your help, encouragement and support. In the days to come, may you take care! Mobile phone upgrade number will not change, welcome to harass the same paragraph!

I feel very lucky to know you. Thank you for your company and help. See you in the Jianghu!