My bitch is in season ready to mate but my male dog is not interested please help

then it's likely she isnt 'ready to mate'

how old are the dogs?

I would say that you should not be attempting to mate this pair at this season as without being rude it would seem from your post that you have insufficient basic knowledge, let alone the very specialist knowledge for breeding this very specialized toy breed.

I suggest you join your breed club, attend shows and seminars about the breed, get to know some ethical experienced breeders that can mentor you.

If your dogs are good enough examples to pass on their genes to the next generation (you should try showing them to get a good cross section of knowledgeable opinions), and only then consider if you and they have what it takes.  For the dogs it will be health and conformation, as well as temperament.  For you ti will be a passion and long term commitment to your breed as well as lifelong commitment to the pups they may produce, and support for their owners.

Good advice from Brainless