Pages are loading slow

Team,

Iam experiencing page load time is very slow, except the homepage every page you open is pretty slow. can you help in tweaking for faster page loads.

Configuration Details:

1 Default(Main server), 3 regional pollers (in combined polls about 1465 devices )

Default / Main server config:
32 CPU's with 32 GB of RAM

Poller config:
16 Cpu, with 16Gb of RAM

 o OS                   Linux 3.10.0-1160.11.1.el7.x86_64 [amd64] (CentOS 7)
 o Apache               2.4.6
 o PHP                  7.4.29 (OPcache: ENABLED)
 o Python               2.7.5
 o MariaDB              5.5.68-MariaDB (extension: mysqli 7.4.29)
 o SNMP                 NET-SNMP 5.7.2
 o RRDtool              1.7.1 (rrdcached 1.7.1: unix:/var/run/rrdcached.sock)
 o Fping                3.16 (IPv4 only)