I'll try and keep this up to date with past matchmaking feedback posts for reference.
2020
Feb 19
2019
March 15
2018
November 5
October 22
August 31
July 24
June 11
May 21
May 7
April 16
April 9
April 2
March 26
March 12
March 5
February 20
January 22
January 16
January 8
2020
Feb 19
2019
March 15
2018
November 5
October 22
August 31
July 24
June 11
May 21
May 7
April 16
April 9
April 2
March 26
March 12
March 5
February 20
January 22
January 16
January 8