Large Files

I’m sure there is a way around this.  I haven’t found a way.  I really like your service.  After months and months, I finally find an AI that can run my TTRPGs, the only issue, is the file size.  Most RPGs are very large.  Is there a way to make some type of knowledge basses, maybe attack it to the folder?  Thanks million, if there  is work, that simple that I do not no of please tell me.