Moved servers now can’t log in

I’m a writer not a programmer so I really come to this problem blind. I hope the following makes some sense.

I have spent the day trying to move my blog to a new server while keeping the same domain name. To do this I have been advised to upload all my individual files to the new server and then export my WordPress database into a My SQL database. I have done these things. Unfortunately, I have been unable to successfully export the database because, of a “Line 47: Duplicate entry for Key 1.” Whatever that means.

More to what I understand: My blog is mostly up now, but I cannot get into my Admin page no matter what I do. It does not recognize my user name, nor my password. I have poked around the MySQL enough to know that there is no wp-users database uploaded — I suspect this could be the problem, or at least part of it.

So, my questions: 1. Without knowing anything about MySQL, is there anything I can do to upload my Databases successfully?

2. Is there any way that I can do something to get into my admin page and try to work out my issues from in there?

3. Assuming neither of these work, is there any way for me to just start a new WordPress blog (at the same domain name) and then import all of my old posts?

Thank you in advance to anyone who can help. At this point, desperation doesn’t come close to describing my feelings.

https://www.joeposnanski.com/JoeBlog