i have a chihuahua and he is so bad at barking at anyone who comes to the door even if it is us can anyone help we dont know what is wrong

Is this dog barking at the Rhodesian Ridgeback/Boxer? Possibly he is over excited and you should concentrate on trying to calm him down?

He's not bad - he's just being a dog, and possibly believes it's his job to alert you to people coming and going.  Your best bet is to concentrate on telling him to do something that means he can't bark - like to go to his bed which is somewhere else........  Do the GSD cross and the RR cross bark too?

he doesnt have a bed and he barks even if you get him to try to stop and only GSD cross barks not the RR

Surely he has some area you can define that he can recognise as a 'bed'?