Logstash logs

I have installed logstash 7.16.3 with default settings in logstash.yml and log4j2.properties.
My understanding is that with this configuration each log type, for example, logstash-plain.log should not be able to exceed 30 files. However in my folder /var/log/logstash there are more than double this amount. I would like to be able to configure it to rotate daily and only keep the last 7 days, could someone help me? Thanks in advance.

This thread may help you.

Thanks!, it's working.