How to ensure ethical purchasing of animals?

Hi all, I'm new to this subreddit and am looking to purchase some dumpy frogs (I know these are amphibians not reptiles), but hope that it will be the beginning of a happy collection of reptiles and amphibians. Trouble is, I'm a huge lover of these animals and therefore it is incredibly important to me that I am in NO way contributing to any type of trafficked animals, or illegal pet trade. I've been disappointed so far in the lack of transparency from most of the reptile stores or exotic pet stores around me regarding where they are getting their animals. In addition, the stores themselves haven't kept the animals in the nice terrariums and tanks I would hope they are encouraging.... does anyone have recommendations for a good seller in the Orange County CA area that they know is ethical and happy to be transparent about where they get their animals? Or perhaps even a reptile/amphibian refuge that looks to rehome abandoned or rescued animals? Thank you!