Before you begin saying things that may or may not be true, you should link to a source to validate your claim.Everyone knows that images give a better presentation to anything and Google likes good looking blogs or websites. I heard that if the pictures are not available for reuse, they would penalize you so I wouldn't go around on Google Images just to search for your niche and paste the image on your site since it is risky. I just want to know that should is copy images from google for my website or I need to hire a professional designer?
I have not ever heard anything like this and I've done websites for 15 years.
Just because you hear something, it doesn't make it true. You need to back this up with a valid source.
Do you have a source to this info?