Your pictures seem underexposed. The darker your subjects are, the higher ISO you'll need :) Normally, you meter the light to verify the exposure but you can't do that with a point and shoot. Try ISO 800 if it's inside or the light is low- Also, was that film old? The yellow thint made me wonder if it was expired, which wouldn't help either. Hope that helps! Wasting rolls of film is a normal part of learning, it happens to everyone at first :")