Can’t join a multiplayer game with my friend

So basically me and my friend wants to play Minecraft and he is at my house we are both connected to the same Internet but when I try to join him it just says connecting to multiplayer game and then it says unable to connect and when I press OK it just brings me back to the menu. I first go to Friends at the top of my screen and then I press on my friends username and it just dose The same thing and says unable to connect i’ve tried everything if you can please try to fix this bug. Thank you and have a nice day god bless.