But if you think you've done everything right on there, it might not be the router at fault. It's worth checking that the box the Minecraft server is running on has that port opened as well.
Learn to allow traffic on specific ports by using the Group Policy Management MMC snap-in to create rules in Windows Defender Firewall with Advanced Security.
So I have a lease IP i think and a public IP cuz when i hit ipconfig the IP is diff from the whatsmyip address, and i went in my router settings to change it to static for that PC
A free open port check tool used to detect open ports on your connection. Test if port forwarding is correctly setup or if your port is being blocked by your firewall or ISP.