I took them from a site called Pinterest, for example there are many of those but for the HD image I'm using the upscaling method to make the picture look better by removing the poor quality you can enhance photos to 4k quality with a program called vivid it helps me a lot when I want to improve the quality of any picture for a music video.
Hey pal. Sorry I wasn't active for a long time but I've had exams, been busy for 3 months. If you have suggestions you can already tell then I'll check the chat.