How to get a .txt log of every single chat (Both PMs and group chats) on a device with more than 150 chats, and most of them having more than 40k messages each?

Sorry if this isn't the right place to ask- but surely there has to be an automatic tool that does this. Media is not necessary but it would be helpful if chat logs also contained the name of the image sent.

If there isn't a tool that does this, I'd appreciate knowing where the chat logs are stored in my device as well.