You can rent a cheap VServer as well and use its static IP to forward traffic. Easiest for it would be SSH reverse tunnel. Or you could VPN it with your homelab (connection established from within your homelab).

If you don’t want to rely on an external service you could as well establish a VPN server within your homelab and use IPv6 to connect to it, although the disadvantage would be, that if you’re trying to connect from IPv4 networks ‘outside’ that wouldn’t work.

Just listing some options to research. Welcome to the hobby, have fun 🤗