After the update, I felt my phone smoother so I did Antutu test and I was surprised :1 after One ui 3.0 core, Antutu score- 1920002 After One Ui 3.1 core, Antutu score -1900003 After the latest security patch of 115 mb the Antutu score- 222000 勞勞勞勞勞勞...
Go to settings > apps > app Cloud > disable it . And there you go no apps will be installed after update I have disabled it and it works on my M21 form last 2 update I haven't got a single unwanted app installed in my device after update