i wanna host things (nextcloud, bin, syncthing) myself but im under cg nat so i cant do it the regular way. i have to tunnel my way out. the only concern is that, the raw data is readable by the ssh server (ie. serveo/localhost.run), but i dont anyone elses eyes on my data
If you want remote access to your home services behind a cgnat, the best way is with a VPS. This gives you a static public IP that your services connect to, and that you can connect to when out and about.
If you don't want the traffic decrypted on the VPS, then tunnel the VPN back to your homelab.
As the VPN already is encrypted, there is no point in re-encrypting it between the vps and homelab.