On mistakes and disappointments (of which I'd agree that we all have had with film), dad (post stroke) developed a habit of moving the camera as he pressed the shutter button. Mum had been taking him to take pictures of Norfolk churches missing from his postcard collection but what he thought he’d taken and what came back when the film was processed were usually quite different. We thought a digital camera which enabled him to review and try again as needed would be of help and got one (2MP Olympus C-2 which I think still works) mostly for his use. I don’t remember dad following up with that but it replaced mums 35mm point and shoot.