https://www.getdroidtips.com/download-google-account-manager-apk/

GAM 6.0.1
https://drive.google.com/open?id=10ZJDhC9ztTmc_hLJPDPWIV2mN3YAE7tt

GAM 5.1
https://drive.google.com/open?id=13_gUCcFCcZtRFgViRNqTYEfen9tQCx_o

GAM 7.1.2
https://drive.google.com/open?id=1_MrkgyQdUOfZ65VcwtR4kpxoBt5-bczs

GAM 8.0
https://drive.google.com/open?id=1xHuTYkNAbpIxgP_ETd50uKEsO7NzCbw4

GAM 8.1
https://drive.google.com/open?id=1wnzVOuC9v3wtSJoMjMI2IBmeprOwtmC2