Creating assets if you can’t find the right one
Sometimes you aren’t able to find just the right asset for what you’re trying to convey. In this case, there are some easily available tools online that allow you to create assets. If you’re looking to create or edit visual content, you might consider GIMP or Canva, free image editors that works across various platforms.
Otherwise, you consider taking pictures yourself! With high quality camera phones you can easily take photos to support the content in your niche.