Great! Since everything works fine in the new account, we can confirm the issue was corruption in the old user profile, likely caused by the virus.
While there are ways to try to repair the old user account, they are complex, unreliable, and rarely provide a complete solution. Therefore, the most effective and practical alternative is to start using the new user account as your primary account and migrate your data and apps from the old one.
I'm glad you were able to transfer your apps.
For the files, you can transfer from the old user account folder to the new user account folder. User account folders are located in C:\Users. There's no need to copy the "AppData" folder, as it often contains what caused the issue.
Once you're satisfied, you can remove the old user account by following the instructions under "Remove a user account" in the article I shared earlier.
No problem if you prefer to keep the old user until you're sure you've transferred everything.
Feel free to ask any questions you may have.