Required configurations to use swap space

Hi,

In our environment we have a application deployed in VMWare vCenter as RHEL 7.8 virtual machine; hardware configuration can be seen in VMHardware printscreen

Our RHEL virtual machine have following details:
- version: Red Hat Enterprise Linux Server release 7.8 (Maipo) 3.10.0--1127.8.2.el7.x86_64
- swap space 8GB
- /proc/sys/vm/swappiness
30
- /etc/sysctl.conf
kernel.randomize_va_space = 2
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.ip_forward = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv6.conf.default.accept_redirects = 0
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.tcp_timestamps = 0
net.ipv6.conf.all.accept_source_route = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.default.log_martians = 1
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1

This configuration does not use the available swap space, so VM memory usage is almost full
What configurations are required in RHEL to use the available swap space?