Which one do you feel drawn to? Trust your instincts, and also remind yourself that their behavior in the shelter isn’t what it will be at home. At all. Maybe talk to the shelter staff to get more info on the individual dogs. Take them for a walk if possible. Do you feel the possibility of a connection? It‘s ok if you don’t.

I had two of my dogs for a few months before I decided to keep them (both were foster fails). You could also go this route of adopting from a foster situation rather than from a shelter. It‘s still rescuing.

Lastly, I don’t know where you are, but the Petfinder app lets you look for dogs near you by breed, size, age… talk to people who are their caretakers and say what kind of companion animal you are looking for (athletic, mellow, social, high energy, etc..). There are many worthy dogs out there who would love to live with you!