@Sphinx That is not uncommon.
I would say it's a courtesy to follow back someone who discovers you and connects, but not obligatory.
People who have accounts with many followers probably don't want to be innundated by too many posts in their Home feeds.
If the account content is important to you, just leave it like that. Maybe the person will notice you, or your comments in some of their posts, look at your profile and decide to Follow at that time.
Don't assume an automatic follow back, is what I am sayin'. 😉
@Sphinx And yes, I have that happen and did not mind or unfollow.
@design_RG 🤝
it happens to me too!
@Sphinx It's normal, I wouldn't worry.
Waht did worry me is what happened the other day -- a follow request, and when I looked at the user's profile...
About 600 accounts he was following. None were following him/her/they.
That 600 / 0 sounded suspect to me, and I blocked the account.