Hi @brian.anggi I think, you should edit the post, so you can delete the first photos and make one out of your own photos for being the thumbnail / preview photo, or choose one from pixabay with telling the source if you really mean you need an external photo.
Okay. I will change my first photos. Thank you @beeber
Thats the most important to learn, only your own content and photos. And if you ever use external, so be very careful if you are alowed to use and even if they are free to use, just write the source there.
You can also see this on postings from other members, how they do it :-)
youre welcome
yes that's correct. Thank you, I still have a lot to learn and try. So that in the future I can write better articles.