I hope you are friendly to everyone. Being friendly is defined as living in a kind, good, and pleasant way, without being harmful or competitive.
Being a friend is something different. A friend is defined as a mutual affection between two people as they support, encourage, and help one another.
You can be friendly and keep people at arm’s length. You never let them get close to you or never allow yourself to get close to them. People are casual acquaintances to whom you act nice when they are around, but there is no connection at a deeper level.
A friend is a person who shares their life with you, and you return the favor. You deeply care about one another, talk regularly, stand together, and pray for the best for them.
The call of scripture is to love one another (John 13:34-35, 1 Peter 1:22, 1 John 3:11, 23, 4:7, 11). This is a plea for us to become friends with other people who follow Jesus. That requires us to do more than be friendly on Sunday morning.
Being friendly is good, but it is a poor substitute for being a friend.