I would like to include an instant chat a bit like messenger, with a possibility to include attachments. I would like to know if there is a plugin to do it quickly, or it must be done internally? If it is to be done internally, what would be the best method to follow?
There are some chat plugins that somewhat work, but they will cost you. Or you can do research and check some templates and figure out how to do it. There isn’t a simple plugin and go, because you need to build a database, and create your own logic for various things.
You might want to do some research on youtube, Udemy, and the forum