You could use PiVPN (you don’t need to install it specifically on a Raspberry Pi – this is just a handy all-in-one software solution). It supports both OpenVPN and Wireguard standards. Forward the relevant port in your router configuration, set up a single user for yourself and then connect via whichever client you prefer (OpenVPN if you use OVPN, or Wireguard if you use Wireguard).

I’ve used it before to access locally-hosted services from outside my home network and it gets the job done with fairly minimal setup.