Port forwarding is not working for Minecraft.

[XPgalaxy]

I have successfully started my Minecraft server using Termux and it can be connected to locally, but I am not doing port forwarding. I don't know if it's related to the firewall. I tried turning off the firewall in the router interface, but it still didn't work. I've been trying for a week now, everything seems fine but port forwarding is not working.

I couldn't explain in detail, please ask questions and let's proceed that way. There are many points to explain and I'm not sure where I need to explain.