You should have thought of this before you started breeding.
I'm an a breeder - 20 years experience. KC (Assured) -not that it means much these days. In 20 years I've had 5 litters - why? Because breeding is a responsibility as much as dog ownership is. Just because your dog is only having one litter doesn't make you a saint - it's got nothing to do with anything tbh.
You should have thoroughly vetted and been vetted by the 'stud' owner - clearly you were not. So, your puppies are unlikely to be robust or healthy and the stud owner should also know people who would want a puppy - the fact you clearly don't know this tells me a lot.
Good potential owners won't touch you with a barge pole. Good owners wait years. I have a full waiting list for my next litter - it's been full for over two years. I won't have another litter until probably June, at the earliest, and my last litter was in November 2022.
You'll get the cheap, inappropriate, people who have been refused by responsible, ethical, breeders who know what they're doing. Poor puppies. Best off being relinquished to a rescue who can actually find someone responsible to take them in.
Greedy. Unethical. Foolish. Selfish.