Open Facebook and go to your profile
Click or tap Friends
Select the pencil icon or Edit privacy
Change Who can see your friends list?
Set it to Only me
Save the changes
On mobile, open the Facebook app
Tap your profile picture
Tap Friends
Tap the three dots or Edit Privacy
Set Friends list visibility to Only me
Save the setting
To hide individual friend activity, go to Settings and privacy
Open Settings
Go to Profile and tagging
Review and adjust who can see your posts and friend-related activity
Check your privacy settings regularly