I feel your pain. I waited almost a year before bringing home my 1st grey. I had no dog experience; the dog had a broken leg, was not crate or house trained walked poorly on the leash, had a high prey drive. I was totally overwhelmed cried for days & finally returned her. I really wanted a greyhound so I kept looking. I then went back & got my 2nd (who had major behavior issues) but I stuck it out & 8 years later she is still here. I adopted a 2nd 5 years ago. Sometimes the 1st time around is overwhelming. No shame in returning the dog. I agree with others an older dog may be more suitable.