If the only proof you’re friends is that you like each other’s posts, you’re followers, not friends.

A shared feed is not a shared life. Reactions cost nothing and arrive automatically, so they prove only that an app put your name in front of someone. Friendship turns up in the things that take effort: a plan, a phone call, an inconvenient favor. Plenty of warm online contact can sit on top of almost no real contact.

Pick two people whose posts you always like and message them directly about something specific. Suggest an actual time instead of saying you should catch up sometime. You will find out quickly which accounts are friends and which are only familiar.