hello @VirtuBox
I just created a new server and migrate the sites to it.
analyzing the site that has traffic I realized that it has a high result of cache = bypass

using the command curl: (domain changed)

curl -sLI domain.tld
HTTP / 1.1 301 Moved Permanently
Server: nginx
Date: Fri, 20 Mar 2020 17:28:02 GMT
Content-Type: text / html
Content-Length: 162
Connection: keep-alive
Location: https: // domain /
X-Powered-By: WordOps
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode = block
X-Content-Type-Options: nosniff
Referrer-Policy: no-referrer, strict-origin-when-cross-origin
X-Download-Options: noopen

HTTP / 2 200
server: nginx
date: Fri, 20 Mar 2020 17:28:02 GMT
content-type: text / html; charset = UTF-8
vary: Accept-Encoding
link: <https: // domain / wp-json />; rel = "https://api.w.org/"
link: <https: // domain />; rel = shortlink
x-powered-by: WordOps
x-frame-options: SAMEORIGIN
x-xss-protection: 1; mode = block
x-content-type-options: nosniff
referrer-policy: no-referrer, strict-origin-when-cross-origin
x-download-options: noopen
strict-transport-security: max-age = 31536000; includeSubDomains; preload
x-fastcgi-cache: MISS

images of google chrome web master and nginx vts:

_# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.4 LTS
Release: 18.04
Codename: bionic

_# wo info

NGINX (1.16.1 ):

user www-data
worker_processes auto
worker_connections 50000
keepalive_timeout 8
fastcgi_read_timeout 300
client_max_body_size 100m
allow 127.0.0.1 ::1

PHP (7.2.28-3):

user
expose_php Off
memory_limit 128M
post_max_size 100M
upload_max_filesize 100M
max_execution_time 300

Information about www.conf
ping.path /ping
pm.status_path /status
process_manager ondemand
pm.max_requests 1500
pm.max_children 50
pm.start_servers 10
pm.min_spare_servers 5
pm.max_spare_servers 15
request_terminate_timeout 300
xdebug.profiler_enable_trigger off
listen php72-fpm.sock

Information about debug.conf
ping.path /ping
pm.status_path /status
process_manager ondemand
pm.max_requests 1500
pm.max_children 50
pm.start_servers 10
pm.min_spare_servers 5
pm.max_spare_servers 15
request_terminate_timeout 300
xdebug.profiler_enable_trigger on
listen 127.0.0.1:9172

PHP (7.3.15-3):

user
expose_php Off
memory_limit 128M
post_max_size 100M
upload_max_filesize 100M
max_execution_time 300

MySQL (10.3.22-MariaDB) on localhost:

port 3306
wait_timeout 60
interactive_timeout 28800
max_used_connections 6
datadir /var/lib/mysql/
socket /var/run/mysqld/mysqld.sock
my.cnf [PATH] /etc/mysql/conf.d/my.cnf