I'd do a fresh install of the OS as a lot of things are not picked up by AVs.

Storing sensitive information in a notepad is also insecure. I suggest using a better authenticator app like aegis (https://getaegis.app/) which allows you to encrypt your tokens/backup files and an offline password manager that also has encryption like keepass (https://keepass.info/). They're open source and feature-packed, visit their websites to see a full list of features.