Changing the port reduces the traffic, yep, but definitely doesn't get rid of it - all my servers use non-standard ports for ssh and there's still ~10 login attempts a minute.
2244 ? I used to get almost no tries on 2244 which is kind of an obvious choice. Nowadays I have wireguard and no ssh ports exposed as they run on private IPs.
sudo apt install fail2ban # Choose your flavour
And you get rid of most pesky SSH knocking traffic and credential stuffing attacks.