1, Can we manually install the client agent? It's firstly recommended to add at least one client push installation account under Administration > Site Configuration > Site > Settings > Client Installation Settings > Client Push Installation to have a try. This account must be a member of the local Administrators group on the target client computers. You can specify more than one client push installation account. Configuration Manager tries each one in turn until one succeeds.
Refer to: Client push installation account
2, As we can't see Started service "ccmsetup" in ccm.log, then that means that the client installation requirements are not met. Please refer to the points below for the Client Push installation pre-requisites:
a, Add the File and Printer Sharing and Windows Management Instrumentation (WMI) as exceptions to the Windows Firewall.
b, Make sure that there are no DNS issues
c, Firewall is not blocking the SMB traffic
d, Make sure the RPC port 135 and the Dynamic port range is opened in any firewall between the client and the server including the windows firewall.
Refer to: Troubleshooting SCCM ..Part I (Client Push Installation )
Hope it helps. Thanks for your time.
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