3 lock screens on my phone. I only need ONE! Can I remove them, and/or how?

When I open my Galaxy S7, I have a blue lock screen covered in a big fat AD with a tiny little swipe bar at the bottom. Then I have another lock screen with my notifications and such. Then I get to my personalized lock screen, but THEN thanks to the first lock screen, I've more than likely accidentally touched the big AD while swiping, so Google Play starts trying to open up. Sometimes I have to swipe it all 2 or 3 times over to get in. Using my own phone should NOT be such a pain.
I believe the first one to be the phone cleaner's lock screen. But then there's the S7's useless secondary swipe lock as well. I just want my personal lock screen, that's it! How do I get rid of the rest, or can I?

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