What tool to use for storing and structuring textual and graphical information?

Question

Content

I can't find a service or tool for convenient work with text and images when preparing content for social media. networks.
The tools that exist now, such as trello or endless publication managers, do not make it possible to collect textual information, graphic information and store it in a structured manner. Everything in them has to be done on the go. By uploading already prepared information as a post.

I would like to find a solution that will allow you to:
1. save the texts of posts and the picture for them in one place, broken down by different posts, and separated by different clients.
2. ideally - with the ability to save not only a picture, but also a video file
3. upload a picture to the desired block of text or download it in 1-2 clicks, it would seem that evernote will do, but if you save several blocks of text and pictures in the text, it does not allow you to download the second and subsequent pictures in this block, only the first one gives download, whatever one may say.
4. Dropbox and other clouds are inconvenient because texts have to be stored in some files, graphics - in others, you have to produce a bunch of folders, files, or mark blocks of text and files, which also takes a lot of time.
5. Google sheets would be nice if it allowed the picture inserted into the cell to be downloaded for work without loss of quality, and while you pull it out from there, you have to do so many manipulations, it’s also inconvenient.