I am unable to connect to my friends game.

Im unable to connect to any friends games. The privacy setting is open. Also our internet connect is working well. I have uninstalled and reinstalled the game. Shut down and opened the game numerous times. I can see the game I want to join but when I try to enter it times out and says connection error.  V 1.17.30

 

I know it's not my internet because the NAT is open, and I am able to join an xbox party and other games.