How do you increase these memories

My mailbox is being flooded with warnings from these exceeded memory emails. How can I increase them to stop the emails?

Time:         Sun Oct  8 00:35:07 2023 +0200
Account:      xxxxxxxxxxxxx
Resource:     Virtual Memory Size
Exceeded:     515 > 512 (MB)
Executable:   /usr/local/bin/php-cgi
Command Line: /usr/local/bin/php-cgi /home/xxxxxxxxx/public_html/wp-cron.php
PID:          32594 (Parent PID:22663)
Killed:       No


Time:         Sun Oct  8 00:28:06 2023 +0200
Account:      xxxxxxxxxxx
Resource:     RSS Memory Size
Exceeded:     270 > 256 (MB)
Executable:   /usr/local/bin/php-cgi
Command Line: /usr/local/bin/php-cgi /home/xxxxxxxxxxxxx/public_html/wp-admin/admin-ajax.php
PID:          32215 (Parent PID:22579)
Killed:       No