When I was a kid in the late 2000s, I used to make powerpoint video "edits" with warrior cat art I found on deviantART and google images set to music i recorded off my ipod shuffle & itunes. (I never posted them anywhere) I learned quickly after sharing it with friends and family, why it was so important to credit artists for their work they have spent so long crafting to get to the piece that i grabbed off google images for my powerpoints.
I was inspired by their work, and they deserved the credit for what they had created. They also reserved the right to ask people to not use their art (be it personal or not) in anything they did not approve of. I started asking if it was ok, even though I wasnt posting them anywhere, before downloading images.
This still rings true for today's edit culture. You need to give credit where credit is due. You may have worked really hard on your edit, but you need to make sure the people who inspired your edit, helped create your edit, are also credited and comfortable with their work being used where they cannot control it. Some people are not comfortable with their work being used. Imagine if someone came to your room, took something off your drsk without asking and just kept it. Sure maybe if they asked you would be ok with it. Maybe you have more of that thing. But they didn't ask, and you never gave permission. You can't take things without permission.
Do not just say "credit to the original artist" or "these come from [this] MAP" or "i cant remember the artists. credit to them"
these are not credits. these are just acknowledging that you did not draw it. a credit links the creator to their work, it tells other people how to find art that impacts them.
Please practice politeness, empathy, and consideration when using other's art in your own art. Use art with the knowledge of how long it took to create, how long it took they person to practice their craft to get to where they are. Treat people with kindness and respect.