Images fromm Wordpress to Facebook & co

Does anyone have a tip?
I want to post images automatically from multiple wordpress sites to different accounts (example Facebook, Pinterest ... ).
For posts I use blog2social pro.
Unfortunately, bulk posting for images does not work - I would have to create each post by hand (too time-consuming).
Do you know a way to either upload images to the media library and automatically create a blog post from it (only image) or do you know a plugin with which I can post the images in social media?
I also have FS Poster, but since it works with cookies on Facebook, it unfortunately does not work reliably and constantly logs out again.
In addition, I have several Facebook accounts - therefore, the cookies also does not fit.

I am afraid the topic is very narrow and specfic. You can use python and make something that posts for you from csv files or txt files.
Should work.