The steps you added here are not complete steps for the upgrade. You need to perform all the steps in the upgrade guide for database upgrades. you can download the upgrade guide
from here - https://dev.sitecore.net/Downloads/Sitecore_Experience_Platform/93/Sitecore_Experience_Platform_93_Initial_Release.aspx
I am adding all the steps in sort here -
-Download below file from the above link -
- Sitecore 9.3.0 rev. 003498 (update package for 8.2).zip
- Sitecore Update Installation Wizard 4.0.1 rev.00153 for 8.x-9.0.zip
- Sitecore 9.3.0 rev. 003498 (upgrade files).zip
-Copy these files in a temp location – eg d:/temp-
Unzip - Sitecore 9.3.0 rev. 003498 (update package for 8.2).zip on the same location-
This will have a .update package for the upgrade - Sitecore 9.3.0 rev. 003498 (update package for 8.2).update
Unzip - Sitecore 9.3.0 rev. 003498 (upgrade files).zip on the same location -
This file will have multiple zip files -
-Disable the Sitecore modules
-Executed the script-
CMS_core_master_web8x.sql script for the Core, Master, and Web databases.
CMS_core.sql script for the Core database only.
-Deploy the new databases – sort cut way to use the databases from the vanilla 9.3 instance
Copy the connection string excluding core, master and web database connection string from the vanilla 9.3 and paste it into the current 8.2 Sitecore ( which you will upgrade)
Copy the core connection string and paste it above the core DB connection string and change the name to security
-Install the Sitecore Update Installation Wizard 4.0.1 rev. 00153 for 8.x-9.0.zip package using Install a package feature
-Install the Sitecore 9.3.0 rev. 003498 (update package for 8.2).update using update installation wizard (for more see chapter 6 in upgrade guide)
Analyze the package
Install the package
-Perform post-upgrade steps from the guide
From your steps it looks like you have not yet done the .update package installation, the SQL script will only create few new tables but the actual data is part of .update package.
I hope this will help you.