I had to use my mom’s information to make my account
That's what is causing confusion. You didn't use her account to make your own, you simply signed in using her account. That is why you see her things. You need to create your own account and use that on your phone. Sign out of her account, and sign in using yours.
Read this document to learn how to sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV, or Mac --> Sign out of iCloud on your devices - Apple Support
For an Apple mobile device:
1. Go to Settings, then tap your name.
2. Scroll down to the bottom.
3. Tap Sign Out.
4. Enter your Apple ID password and tap Turn Off. (Read this if you If you forgot your Apple ID password - Apple Support )
5. Turn on the data that you want to keep a copy of on your device.
6. Tap Sign Out.
7. Tap Sign Out again to confirm that you want to sign out of iCloud.
Also of possible relevance:
Turn off Find My on your iPhone or other devices - Apple Support
Read this support article to learn how to sign in with your Apple ID on various kinds of devices --> Sign in with your Apple ID - Apple Support
For an Apple Mobile device:
1. Open the Settings app.
2. Tap Sign in to your [device].
3. Enter your Apple ID and password.
4. If prompted, enter the six-digit verification code sent to your trusted device or phone number and complete sign in.
Note that transferring anything that is your from her account to your account is complicated. I can explain it if you need it but it's a long post.
Make sure that each family member has a unique Apple ID as suggested in this support article --> Make sure that each family member has a unique Apple ID - Apple Support
For a child (age varies according to country), read this support article about how to create an Apple ID for your child --> Create an Apple ID for your child - Apple Support
This support article describes how to create a new, non-child Apple ID = create an Apple Account. --> How to create a new Apple ID - Apple Support