Reminds me that I wanted to expose an old T.A.G. BBS to the web as a nostalgia project recently. Feel free to check it out, create an account, play some LORD, Trade Wars 2002, Usurper, Messages, etc. I just wanted the experience to live on as I remember it with nothing more than a modern web browser required. https://nightwatchbbs.com
Sounds like a you problem I've had multiple FreeBSD systems on vultr for over a decade and never had sshd issues. Of course I also use an alternate port and active fail2ban to block those who insist on any brute force for any protocol. 128K active blocks currently.