Hello
If this is your personal computer, you shouldn't be setting it up with your work account. By doing so, you surrended your computer to be managed by your work's IT department admin user, not your own user.
You might be able to do this.
Hold down Shift key while you choose Windows restart, then go to Troubleshoot > Advanced Options > Startup Settings, click on restart, then choose option 4.
When prompted for password, leave it blank and enter.
When you are in safe mode, hold down windows + r keys, type in netplwiz and press enter. Click Add, create a user without Microsoft account, set it up as a local user, and then make it admin.
Or reinstall to start over, and either sign in with your personal account, or local user. Logging in with work account typically is only for organization managed device, not for your own personal device, as I said, your computer is then in the company's Azure/Entra domain and admin/IT can manage it remotely. If you just need to use your work account to sign into Microsoft 365, your Windows user can stay personal or local, then just sign into the apps themselves with work account.