How to install Zabbix 6.0 on Debian 11

How to Install Zabbix 6.0 on Debian 11

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Commands -
apt update

apt upgrade
apt install gnupg

apt install apache2 php php-mysql php-mysqlnd php-ldap php-bcmath php-mbstring php-gd php-pdo php-xml libapache2-mod-php

systemctl status apache2

apt update
apt -y install mysql-server

systemctl status

mysql -u root -p

create database zabbix character set utf8mb4 collate utf8mb4_bin;
flush privileges;
quit;

apt update

apt install zabbix-server-mysql zabbix-frontend-php zabbix-apache-conf zabbix-sql-scripts zabbix-agent

### password required: zabbixpw###

DBHost=localhost
DBName=zabbix
DBUser=zabbix
DBPassword=zabbixpw


systemctl restart apache2

systemctl start zabbix-server zabbix-agent apache2
systemctl enable zabbix-server zabbix-agent apache2

systemctl status zabbix-server

systemctl status zabbix-agent

ufw allow 80/tcp
ufw allow 443/tcp
ufw allow 10050/tcp
ufw allow 10051/tcp
ufw reload

Uuser name Admin with password zabbix to log in as a Zabbix superuser

[Jose__Manuel]

Hello, in this step dpkg -i the system says that:
not found in path or not execuable, but the file is there and i put chmod 777, so What is happening? Please help me.