Using Classic Outlook on Windows for personal email, calendar, and contact management
Hello, welcome to the Microsoft Q&A forum.
For Outlook issues where you can't send or receive emails, you can open Settings > Apps, find and uninstall Outlook in the installed apps list. After uninstalling, download and reinstall it from the Microsoft Store. Then log in to your email again to see if this resolves the issue.
For OneDrive issues, I'll need a screenshot to understand the situation. You can upload an icon below:
These are my thoughts and suggestions, and I hope they're helpful.