I wouldnt call Tailscale "useless" in that case. If you use Tailscale there, you dont have to port forward, so you have no exposure to the general internet. No one bashing on your port, looking for vulnerabilities. You don't need a DDNS, since Tailscale gives you a fixed address for your machine that persists. So you can set a single CNAME record with your Domain hosting service and you're done. And Tailscale has clients for all platforms, including mobile, so it "just works" with all your devices. It's free for up to 20 devices.