Hello,
I was all fired up to post and complain about a problem, but now I'm telling people how I fixed it.

My opera updated from version 63.something to 103.something and my speed dial, history and open tabs all vanished. I was bewildered and livid. I stopped using Opera for a couple weeks while trying to sort it out. I don't use any extensions, it wasn't an issue with my antivirus, and my computer didn't crash. I also don't have Sync set up and still don't because I am perhaps a little paranoid about what it would sync and such. Anyway, what I did (when I couldn't find an answer from Google, and that's part of why I'm writing this) was some of the steps here. Specifically this.

In case those links ever change, I went to opera://about and confirmed both

The Profile folder:
(C:\Users{your user name}\AppData\Roaming\Opera Software\Opera Stable\Default)

And the Cache folder:
(C:\Users{your user name}\AppData\Local\Opera Software\Opera Stable\Default).

you can go to command prompt and type the following separately to open each folder:
%AppData%\Roaming\Opera Software\Opera Stable\Default
%AppData%\Local\Opera Software\Opera Stable\Default

From there I renamed both "Default" folders to "Default.old1" because for some reason one of them already had a Default.old. I opened Opera and I had all of my unorganized crap (30+ open tabs), back, some of my history (not super important) and my speed dial.

Let's just ignore that I don't remember what I was doing with most of the tabs.