By default, your friends list on Facebook is "Public." It means that anyone can see it.
If you don't want others to see your Facebook friends list, then you can hide it. Here's how you can do it on Facebook web version (PC) and app (Android):
That's it. From now on, only you can see your Facebook friends list and others can't.
That's all. From now on, only you can see your Facebook friends list and no one else can.
I hope this guide is useful to you. If it is, share with your friends.
How to Hide Facebook Friends List