How can I connect my Win 11 device to my dad's computer for parental controls?

Hassan, I feel that you don't really pay attention to my replies to you. I've mentioned in several replies to you that you shouldn't be set up as administrator and I have already given you the exact instruction how to make sure you are not administrator. It is YOUR MOM"s account that needs to be administrator. Let's try not to go around in circle here.

This is the instruction I have given you. I will copy paste here again in case you didn't read it:

Make sure your mom adds you to the family group first. Then do the following:

On your computer, sign in with your user first.

1. Type netplwiz in the search on the taskbar and hit enter. When launched, click on "Add". Then go ahead and sign into your mom's account.
2. When the above user is created, back to the main netplwiz page, double click on this new user, go to the Group Membership tab, make it administrator. Save the change.
3. Restart the computer. Sign into the your mom's user.
4. Launch netplwiz again, delete your user from there.
5. Go to Settings > Accounts > Family, scroll down, and next to your user, choose can sign in.
6. Restart the computer, you should be able to see your user and your mom' listed. You can sign into yours.

To remove your dad's device under your account, go to your dad's computer, go to Settings > Accounts > Family, if your email is listed there, change it to "cannot sign in".

Then go on the web browser, go to https://account.live.com/devices, sign in as yours, if the device is still listed, you can remove it from there as well.

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If your data is saved locally, when you did the transfer like I mentioned in my last reply, it will transfer over.

The transfer may or may not be needed.

You can perform the steps above first. Once it is done, sign into your account, and go to C:\users\ and see if it creates two folders of yours. If so, then transfer is needed. If not, then no need to transfer anything.

To transfer, you need to sign in using your mom's account, then go to C:\users\your older user folder, copy and paste them to C:\users\your new user folder.

Make sure your mom adds you to the family group first. Then do the following:

On your computer, sign in with your user first.

1. Type netplwiz in the search on the taskbar and hit enter. When launched, click on "Add". Then go ahead and sign into your mom's account.
2. When the above user is created, back to the main netplwiz page, double click on this new user, go to the Group Membership tab, make it administrator. Save the change.
3. Restart the computer. Sign into the your mom's user.
4. Launch netplwiz again, delete your user from there.
5. Go to Settings > Accounts > Family, scroll down, and next to your user, choose can sign in.
6. Restart the computer, you should be able to see your user and your mom' listed. You can sign into yours.

If you want to restart and start over with your mom's account, that's totally fine.

Just make sure that - once you are addd in a family group, on the computer you want to use under family feature, your organizer (mom) needs to sign in as a user first, and must be an admin user. Then she can go to settings > accounts > family, change yours to can sign in. Don't create your Windows user before hers. Don't make yours admin. That's when it will break family safety feature.