i cant erase apps on my iPhone X

If the apps jiggle but there is no X in the corner of the app icon to delete the app, you may have restricted the deletion of apps if you are using screen time.

See the section about iTunes and App Store purchases.

Use parental controls on your child's iPhone, iPad, and iPod touch - Apple Support

what you can do to ensure you are able to remove it:

in this order:

1. reboot your phone and then retry the removal. if this does not work, then proceed to step 2.
2. logoff from your apple account (under settings->you see your name at the top, click it-> inside Apple ID->scroll all the way down and select sign out (you need to remember your apple ID account and password)
3. wait a min, then sign in again with that apple account. You can reboot your phone after you sign in if you want.
4. see if the app has been automatically remove. if not, remove it manually again.

How to delete apps on your iPhone, iPad, and iPod touch - Apple Support

Sorry, HenryYen, that is incorrect information.

The correct answer is go to Settings/Screen Time/Content & Privacy Restrictions/iTunes & App Store Purchases - Change Deleting Apps to Allow.