hello! Good morning, I am contacting you to ask for help on opening ports,

I have seen many tutorials on how to do it on YouTube, but they do not work for me.

the port I want to open is of minecraft Java

 port: 25565

protocol: TCP/UDP

 I have followed the following steps: Nat forwarding > Virtual Servers. then I filled in the ports and the ip address, and I thought that it was all, but I went to the web pages of ( i can't put in the links for a restricción)

canyouseeme

portchecker

and those pages tell me that the port is closed.

Please, I ask for your help, thank you very much!