SuiteCRM UBUNTU 19.10 Installation problem

Hello again, everyone.

I’m trying to install SuiteCRM 7.11.13 on UBUNTU 19.10, and I was able to install PHP 7.3, the webserver Nginx, and the database MariaDB, but I got trouble install SuiteCRM and I don’t understand why.
First, I was able to enter these command lines:

export VER=“7.11.8”
tar xvf v${VER}.tar.gz
rm v${VER}.tar.gz

sudo mkdir /srv/suitecrm
sudo rsync -avv SuiteCRM-${VER}/* /srv/suitecrm

chown -R www-data:www-data /srv/suitecrm/
cd /srv/suitecrm/
chmod -R 775 *

Then, I tried to configure Nginx with this command line:

sudo vim /etc/nginx/conf.d/suitecrm.conf

I even inserted these lines on the file before saving it with :wq!:

server {
client_max_body_size 50M;
root /srv/suitecrm;

location / {
   try_files $uri /index.php;

location ~ .php$ {
try_files $uri =404;
#fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
fastcgi_pass localhost:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
error_log /var/log/nginx/suitecrm_error.log;
access_log /var/log/nginx/suitecrm_access.log;
location ~ /.ht {
deny all;

However, this is what I got when I enter the command line sudo systemctl start nginx php-fpm:

Failed to start php-fpm.service: Unit php-fpm.service not found.

And for sudo systemctl enable nginx php-fpm:

Failed to enable unit: Unit php-fpm.service not found.

So, when I open a browser on UBUNTU and go to the server name, it display the screen ?Adress not found? instead of the SuiteCRM License agreement?s screen.

I believe the source of the problem is that I badly configured the webserver Nginx to the link.
Can someone please help me how to clear that problem?