If you are okay with internet exposure on some level, Cloudflare Tunnel is a really fantastic product:
https://developers.cloudflare.com/tunnel/
It’s obviously not a magical security layer that eliminates all issues related to public Internet exposure, but in my opinion it is good enough for the average home user.
Note that Cloudflare Tunnel blocks requests above 100MiB, which makes it impossible to upload long videos. This is being addressed in https://github.com/immich-app/immich/pull/22385
Oh good callout, I had only tried it for not-giant-upload services.
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