Hi, I'm Bernard, a fellow Windows user. I'm happy to help!
To check, kindly follow the steps below:
Method 1.
Go to Settings > Accounts > Access work or school
Check if there is any connected work or school account on the PC.
Method 2.
Press the Windows key + X, then select Terminal (Admin) or Windows PowerShell (Admin)
Copy, paste, and enter the command below:
dsregcmd /status
Look for AzureAdJoined, IsDeviceJoined, and IsUserAzureAD
It should be tagged as No