Zend certified PHP/Magento developer

zabbix timeout while connecting to 161

I have a zabbix server, and I want to monitor an ubuntu 22.04 using SNMP

I used the following commands to install and set the snmp user for the ubuntu 22.04

$ sudo apt install snmp snmpd libsnmp-dev
$ net-snmp-create-v3-user -ro -a STrP@SSWRD -x STr0ngP@SSWRD -A SHA -X AES snmpadmin

I enabled snmpd

$ sudo systemctl enable snmpd

BUT, on the zabbix Frontend, when I create the host and set the credentials there, the SNMP icon turns RED

EVEN snmpwalk timedout

user@ubuntuserver:~$ sudo snmpwalk -v3 -a SHA -A STrP@SSWRD -x AES -X STr0ngP@SSWRD -l authPriv -u snmpadmin 192.168.240.188
snmpwalk: Timeout

Please Help!