From any tab, tap theMenubutton at the top left.
TapSettings and privacy>Privacy and safety.
Scroll down and tapDiscoverability and contacts.

TapSync address book contactsto enable it.
The X app will then show you the X accounts associated with your contacts.
Navigate to the X website and jump in to your account if you haven’t already.

FAQ
No.
X does keep your search history.
However, only you’re free to see your X search history.

Enter a term or phrase, and view the results X presents.
To see the person’s top posts, tapTop.
To see newer tweets, tapLatest.

To see photo posts, tapPhotos.
To see video posts, tapVideos.
Then, narrow your search by entering other information, such as a search term or hashtag.