Selfhosted

I've been using No-IP free plan for years without issues. Inputted the credentials to my routers DDNS client and then basically forgot about it. Free users need to confirm their account once a month via email but that's just one click.

If your domain registrar happens to have an API to update DNS entries, you could implement DDNS yourself by writing a simple automated script to check the external IP (e.g. via ipify.org) and if it's changed from the last check then call the API to update the DNS entries.

Don't expose your services directly to the internet. Instead rent a VPS and the use Wireguard to bring the traffic back home. In your home network your services should be in there own VLAN and everything should be isolated and sandboxed. Everything has the potential to be compromised so always practice least privilege and defense in depth.

I use TailScale and their free Personal plan.

Disclaimer though: I haven't done much due diligence on it. It was easy to install when I first started self hosting with Umbrel and I use it so rarely that it's good enough for my usage.

If you can avoid it, don’t open ports in your firewall, don’t publish your home IP address, and keep everything behind a VPN. If only you and your family will be using these services, go with Tailscale or one of its competitors. Otherwise, VPS or cloudflare tunnel/competitor.