ask for permission from artists to use their stuff, or colour stuff from bases. hell, make friends with the community and ask them to gift you art. no excuse for theft and plagiarism.
Viewing post in My College Friend's Dad comments
good thing that nothing was stolen from artists then, since the art was generated. AI art is a thing, as the time passes it will only get better and more popular. deal with it and stop whining.
Also, if you think you can just go around the community and ask for free art it means you don't engage with the community at all.