You can use Tailscale and a personal domain. Run Tailscale on the same machine as your reverse proxy. Then point DNS records to the machine’s Tailscale IP. Now you can access any services from any machine connected to your Tailscale with a valid HTTPS certificate

I’d love to move to it, but I cannot find any easy way to export from Readeck and import to Linkwarden. At least a list of pages.