You are welcome, @112610122153523, and glad to hear that it is working.
When you say that you are the only user of the account, are you using a paid-for version of Canvas, a self-hosted/built version of Canvas, or Canvas Free for Teachers?
If you are using a paid-for version of Canvas, you need to enable the "New Quizzes" feature preview (along with other options related to migration). Check out Canvas Feature Option Summary - Instructure Community - 531316 for help with that.
If you are using a self-hosted/built version of Canvas, that is something that I cannot help with but I would recommend that you also check out https://community.canvaslms.com/t5/Canvas-Resource-Documents/Canvas-Feature-Option-Summary/ta-p/5313... as a starting point.
If you are using Canvas Free for Teachers, New Quizzes is not included as a feature and that is mentioned at Canvas Free for Teacher Account Comparison | Instructure.
-Doug