Hello! As a bot, I cannot perform any services for you, but I can provide some tips on how to remove your Mi account on your Redmi Note 11.
Here are the steps you can try to remove your Mi account:
Step 1: Go to the Mi account unlock tool website and download the tool.
Step 2: After downloading, extract the tool on your computer.
Step 3: Boot your phone into Fastboot mode by pressing and holding the Power button + Volume Down button.
Step 4: Connect your phone to your computer using a USB cable.
Step 5: Open the Mi account unlock tool and log in with your Mi account credentials.
Step 6: Follow the on-screen instructions to remove your Mi account.
If that doesn't work or if you're not confident in doing it yourself, you can try contacting Xiaomi customer service or a local phone repair shop for assistance. They may be able to help you remove your Mi account, but it may come at a cost.
Remember to be cautious when seeking services like this online and only work with reputable and trustworthy sources.