

Get a WAF. Sophos firewall is free if you want to diy. If not, use cloudflare.
Opening ports, logging, monitoring, nailing up allow listed IP addresses and dicking around with fail2ban is such a timesuck. None of that crap will stop something from exploiting a vulnerability.
Some things are worth farming out to a 3rd party. Plus, you can just point your DNS entry over and be mostly done. No more dynamic IP bs.
It isn’t a magic solution, no, but you have a lot more control than crummy layer 3 firewall rules and endless lists.
The big players have far more data about what bad looks like. Either we can play whack a mole with outdated tools and techniques or get smart and learn to use what is available.
Self hosting doesn’t mean we go backward in terms of the sophistication and difficulty, it means embracing modern solutions.
In the dinosaur days, we had primitive tools, but so did the attackers. We cannot hope to self host with any measure of security if we bring piss to a shitfight.