When investigating problems with starting, remember to always check the error log. The systemd status does not provide the details.
The error log will be likely in /var/log/mysqld.log or similar or maybe logging to syslog. Best to specify the error log file explicitly with log_error setting.
Check also what configuration is under /etc/my.cnf.d/
Btw, I can see wrong used variable:
wsrep_sst_auth="11111111e"
It should be in a form of
wsrep_sst_auth="user:pass"
[URL]Index of wsrep system variables - Percona XtraDB Cluster