Certbot auto renew 

// find your certbot timer name
ll /usr/lib/systemd/system/
get file [certbot.timer || cerbot-renew.timer||...]

// check your certbot timer
systemctl status [certbot.timer || cerbot-renew.timer||...]

// if the timer is not enabled
systemctl start [certbot.timer || cerbot-renew.timer||...]
systemctl enable [certbot.timer || cerbot-renew.timer||...]

//check history of the renew task
journalctl -u certbot-renew.service